linux/fs/ceph/dir.c
<<
>>
Prefs
   1#include <linux/ceph/ceph_debug.h>
   2
   3#include <linux/spinlock.h>
   4#include <linux/fs_struct.h>
   5#include <linux/namei.h>
   6#include <linux/slab.h>
   7#include <linux/sched.h>
   8
   9#include "super.h"
  10#include "mds_client.h"
  11
  12/*
  13 * Directory operations: readdir, lookup, create, link, unlink,
  14 * rename, etc.
  15 */
  16
  17/*
  18 * Ceph MDS operations are specified in terms of a base ino and
  19 * relative path.  Thus, the client can specify an operation on a
  20 * specific inode (e.g., a getattr due to fstat(2)), or as a path
  21 * relative to, say, the root directory.
  22 *
  23 * Normally, we limit ourselves to strict inode ops (no path component)
  24 * or dentry operations (a single path component relative to an ino).  The
  25 * exception to this is open_root_dentry(), which will open the mount
  26 * point by name.
  27 */
  28
  29const struct inode_operations ceph_dir_iops;
  30const struct file_operations ceph_dir_fops;
  31const struct dentry_operations ceph_dentry_ops;
  32
  33/*
  34 * Initialize ceph dentry state.
  35 */
  36int ceph_init_dentry(struct dentry *dentry)
  37{
  38        struct ceph_dentry_info *di;
  39
  40        if (dentry->d_fsdata)
  41                return 0;
  42
  43        di = kmem_cache_alloc(ceph_dentry_cachep, GFP_NOFS | __GFP_ZERO);
  44        if (!di)
  45                return -ENOMEM;          /* oh well */
  46
  47        spin_lock(&dentry->d_lock);
  48        if (dentry->d_fsdata) {
  49                /* lost a race */
  50                kmem_cache_free(ceph_dentry_cachep, di);
  51                goto out_unlock;
  52        }
  53
  54        if (ceph_snap(dentry->d_parent->d_inode) == CEPH_NOSNAP)
  55                d_set_d_op(dentry, &ceph_dentry_ops);
  56        else if (ceph_snap(dentry->d_parent->d_inode) == CEPH_SNAPDIR)
  57                d_set_d_op(dentry, &ceph_snapdir_dentry_ops);
  58        else
  59                d_set_d_op(dentry, &ceph_snap_dentry_ops);
  60
  61        di->dentry = dentry;
  62        di->lease_session = NULL;
  63        dentry->d_time = jiffies;
  64        /* avoid reordering d_fsdata setup so that the check above is safe */
  65        smp_mb();
  66        dentry->d_fsdata = di;
  67        ceph_dentry_lru_add(dentry);
  68out_unlock:
  69        spin_unlock(&dentry->d_lock);
  70        return 0;
  71}
  72
  73struct inode *ceph_get_dentry_parent_inode(struct dentry *dentry)
  74{
  75        struct inode *inode = NULL;
  76
  77        if (!dentry)
  78                return NULL;
  79
  80        spin_lock(&dentry->d_lock);
  81        if (!IS_ROOT(dentry)) {
  82                inode = dentry->d_parent->d_inode;
  83                ihold(inode);
  84        }
  85        spin_unlock(&dentry->d_lock);
  86        return inode;
  87}
  88
  89
  90/*
  91 * for readdir, we encode the directory frag and offset within that
  92 * frag into f_pos.
  93 */
  94static unsigned fpos_frag(loff_t p)
  95{
  96        return p >> 32;
  97}
  98static unsigned fpos_off(loff_t p)
  99{
 100        return p & 0xffffffff;
 101}
 102
 103/*
 104 * When possible, we try to satisfy a readdir by peeking at the
 105 * dcache.  We make this work by carefully ordering dentries on
 106 * d_u.d_child when we initially get results back from the MDS, and
 107 * falling back to a "normal" sync readdir if any dentries in the dir
 108 * are dropped.
 109 *
 110 * D_COMPLETE tells indicates we have all dentries in the dir.  It is
 111 * defined IFF we hold CEPH_CAP_FILE_SHARED (which will be revoked by
 112 * the MDS if/when the directory is modified).
 113 */
 114static int __dcache_readdir(struct file *filp,
 115                            void *dirent, filldir_t filldir)
 116{
 117        struct ceph_file_info *fi = filp->private_data;
 118        struct dentry *parent = filp->f_dentry;
 119        struct inode *dir = parent->d_inode;
 120        struct list_head *p;
 121        struct dentry *dentry, *last;
 122        struct ceph_dentry_info *di;
 123        int err = 0;
 124
 125        /* claim ref on last dentry we returned */
 126        last = fi->dentry;
 127        fi->dentry = NULL;
 128
 129        dout("__dcache_readdir %p at %llu (last %p)\n", dir, filp->f_pos,
 130             last);
 131
 132        spin_lock(&parent->d_lock);
 133
 134        /* start at beginning? */
 135        if (filp->f_pos == 2 || last == NULL ||
 136            filp->f_pos < ceph_dentry(last)->offset) {
 137                if (list_empty(&parent->d_subdirs))
 138                        goto out_unlock;
 139                p = parent->d_subdirs.prev;
 140                dout(" initial p %p/%p\n", p->prev, p->next);
 141        } else {
 142                p = last->d_u.d_child.prev;
 143        }
 144
 145more:
 146        dentry = list_entry(p, struct dentry, d_u.d_child);
 147        di = ceph_dentry(dentry);
 148        while (1) {
 149                dout(" p %p/%p %s d_subdirs %p/%p\n", p->prev, p->next,
 150                     d_unhashed(dentry) ? "!hashed" : "hashed",
 151                     parent->d_subdirs.prev, parent->d_subdirs.next);
 152                if (p == &parent->d_subdirs) {
 153                        fi->flags |= CEPH_F_ATEND;
 154                        goto out_unlock;
 155                }
 156                spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);
 157                if (!d_unhashed(dentry) && dentry->d_inode &&
 158                    ceph_snap(dentry->d_inode) != CEPH_SNAPDIR &&
 159                    ceph_ino(dentry->d_inode) != CEPH_INO_CEPH &&
 160                    filp->f_pos <= di->offset)
 161                        break;
 162                dout(" skipping %p %.*s at %llu (%llu)%s%s\n", dentry,
 163                     dentry->d_name.len, dentry->d_name.name, di->offset,
 164                     filp->f_pos, d_unhashed(dentry) ? " unhashed" : "",
 165                     !dentry->d_inode ? " null" : "");
 166                spin_unlock(&dentry->d_lock);
 167                p = p->prev;
 168                dentry = list_entry(p, struct dentry, d_u.d_child);
 169                di = ceph_dentry(dentry);
 170        }
 171
 172        dget_dlock(dentry);
 173        spin_unlock(&dentry->d_lock);
 174        spin_unlock(&parent->d_lock);
 175
 176        dout(" %llu (%llu) dentry %p %.*s %p\n", di->offset, filp->f_pos,
 177             dentry, dentry->d_name.len, dentry->d_name.name, dentry->d_inode);
 178        filp->f_pos = di->offset;
 179        err = filldir(dirent, dentry->d_name.name,
 180                      dentry->d_name.len, di->offset,
 181                      ceph_translate_ino(dentry->d_sb, dentry->d_inode->i_ino),
 182                      dentry->d_inode->i_mode >> 12);
 183
 184        if (last) {
 185                if (err < 0) {
 186                        /* remember our position */
 187                        fi->dentry = last;
 188                        fi->next_offset = di->offset;
 189                } else {
 190                        dput(last);
 191                }
 192        }
 193        last = dentry;
 194
 195        if (err < 0)
 196                goto out;
 197
 198        filp->f_pos++;
 199
 200        /* make sure a dentry wasn't dropped while we didn't have parent lock */
 201        if (!ceph_dir_test_complete(dir)) {
 202                dout(" lost D_COMPLETE on %p; falling back to mds\n", dir);
 203                err = -EAGAIN;
 204                goto out;
 205        }
 206
 207        spin_lock(&parent->d_lock);
 208        p = p->prev;    /* advance to next dentry */
 209        goto more;
 210
 211out_unlock:
 212        spin_unlock(&parent->d_lock);
 213out:
 214        if (last)
 215                dput(last);
 216        return err;
 217}
 218
 219/*
 220 * make note of the last dentry we read, so we can
 221 * continue at the same lexicographical point,
 222 * regardless of what dir changes take place on the
 223 * server.
 224 */
 225static int note_last_dentry(struct ceph_file_info *fi, const char *name,
 226                            int len)
 227{
 228        kfree(fi->last_name);
 229        fi->last_name = kmalloc(len+1, GFP_NOFS);
 230        if (!fi->last_name)
 231                return -ENOMEM;
 232        memcpy(fi->last_name, name, len);
 233        fi->last_name[len] = 0;
 234        dout("note_last_dentry '%s'\n", fi->last_name);
 235        return 0;
 236}
 237
 238static int ceph_readdir(struct file *filp, void *dirent, filldir_t filldir)
 239{
 240        struct ceph_file_info *fi = filp->private_data;
 241        struct inode *inode = filp->f_dentry->d_inode;
 242        struct ceph_inode_info *ci = ceph_inode(inode);
 243        struct ceph_fs_client *fsc = ceph_inode_to_client(inode);
 244        struct ceph_mds_client *mdsc = fsc->mdsc;
 245        unsigned frag = fpos_frag(filp->f_pos);
 246        int off = fpos_off(filp->f_pos);
 247        int err;
 248        u32 ftype;
 249        struct ceph_mds_reply_info_parsed *rinfo;
 250        const int max_entries = fsc->mount_options->max_readdir;
 251        const int max_bytes = fsc->mount_options->max_readdir_bytes;
 252
 253        dout("readdir %p filp %p frag %u off %u\n", inode, filp, frag, off);
 254        if (fi->flags & CEPH_F_ATEND)
 255                return 0;
 256
 257        /* always start with . and .. */
 258        if (filp->f_pos == 0) {
 259                /* note dir version at start of readdir so we can tell
 260                 * if any dentries get dropped */
 261                fi->dir_release_count = ci->i_release_count;
 262
 263                dout("readdir off 0 -> '.'\n");
 264                if (filldir(dirent, ".", 1, ceph_make_fpos(0, 0),
 265                            ceph_translate_ino(inode->i_sb, inode->i_ino),
 266                            inode->i_mode >> 12) < 0)
 267                        return 0;
 268                filp->f_pos = 1;
 269                off = 1;
 270        }
 271        if (filp->f_pos == 1) {
 272                ino_t ino = parent_ino(filp->f_dentry);
 273                dout("readdir off 1 -> '..'\n");
 274                if (filldir(dirent, "..", 2, ceph_make_fpos(0, 1),
 275                            ceph_translate_ino(inode->i_sb, ino),
 276                            inode->i_mode >> 12) < 0)
 277                        return 0;
 278                filp->f_pos = 2;
 279                off = 2;
 280        }
 281
 282        /* can we use the dcache? */
 283        spin_lock(&ci->i_ceph_lock);
 284        if ((filp->f_pos == 2 || fi->dentry) &&
 285            !ceph_test_mount_opt(fsc, NOASYNCREADDIR) &&
 286            ceph_snap(inode) != CEPH_SNAPDIR &&
 287            ceph_dir_test_complete(inode) &&
 288            __ceph_caps_issued_mask(ci, CEPH_CAP_FILE_SHARED, 1)) {
 289                spin_unlock(&ci->i_ceph_lock);
 290                err = __dcache_readdir(filp, dirent, filldir);
 291                if (err != -EAGAIN)
 292                        return err;
 293        } else {
 294                spin_unlock(&ci->i_ceph_lock);
 295        }
 296        if (fi->dentry) {
 297                err = note_last_dentry(fi, fi->dentry->d_name.name,
 298                                       fi->dentry->d_name.len);
 299                if (err)
 300                        return err;
 301                dput(fi->dentry);
 302                fi->dentry = NULL;
 303        }
 304
 305        /* proceed with a normal readdir */
 306
 307more:
 308        /* do we have the correct frag content buffered? */
 309        if (fi->frag != frag || fi->last_readdir == NULL) {
 310                struct ceph_mds_request *req;
 311                int op = ceph_snap(inode) == CEPH_SNAPDIR ?
 312                        CEPH_MDS_OP_LSSNAP : CEPH_MDS_OP_READDIR;
 313
 314                /* discard old result, if any */
 315                if (fi->last_readdir) {
 316                        ceph_mdsc_put_request(fi->last_readdir);
 317                        fi->last_readdir = NULL;
 318                }
 319
 320                /* requery frag tree, as the frag topology may have changed */
 321                frag = ceph_choose_frag(ceph_inode(inode), frag, NULL, NULL);
 322
 323                dout("readdir fetching %llx.%llx frag %x offset '%s'\n",
 324                     ceph_vinop(inode), frag, fi->last_name);
 325                req = ceph_mdsc_create_request(mdsc, op, USE_AUTH_MDS);
 326                if (IS_ERR(req))
 327                        return PTR_ERR(req);
 328                req->r_inode = inode;
 329                ihold(inode);
 330                req->r_dentry = dget(filp->f_dentry);
 331                /* hints to request -> mds selection code */
 332                req->r_direct_mode = USE_AUTH_MDS;
 333                req->r_direct_hash = ceph_frag_value(frag);
 334                req->r_direct_is_hash = true;
 335                req->r_path2 = kstrdup(fi->last_name, GFP_NOFS);
 336                req->r_readdir_offset = fi->next_offset;
 337                req->r_args.readdir.frag = cpu_to_le32(frag);
 338                req->r_args.readdir.max_entries = cpu_to_le32(max_entries);
 339                req->r_args.readdir.max_bytes = cpu_to_le32(max_bytes);
 340                req->r_num_caps = max_entries + 1;
 341                err = ceph_mdsc_do_request(mdsc, NULL, req);
 342                if (err < 0) {
 343                        ceph_mdsc_put_request(req);
 344                        return err;
 345                }
 346                dout("readdir got and parsed readdir result=%d"
 347                     " on frag %x, end=%d, complete=%d\n", err, frag,
 348                     (int)req->r_reply_info.dir_end,
 349                     (int)req->r_reply_info.dir_complete);
 350
 351                if (!req->r_did_prepopulate) {
 352                        dout("readdir !did_prepopulate");
 353                        fi->dir_release_count--;    /* preclude D_COMPLETE */
 354                }
 355
 356                /* note next offset and last dentry name */
 357                fi->offset = fi->next_offset;
 358                fi->last_readdir = req;
 359
 360                if (req->r_reply_info.dir_end) {
 361                        kfree(fi->last_name);
 362                        fi->last_name = NULL;
 363                        if (ceph_frag_is_rightmost(frag))
 364                                fi->next_offset = 2;
 365                        else
 366                                fi->next_offset = 0;
 367                } else {
 368                        rinfo = &req->r_reply_info;
 369                        err = note_last_dentry(fi,
 370                                       rinfo->dir_dname[rinfo->dir_nr-1],
 371                                       rinfo->dir_dname_len[rinfo->dir_nr-1]);
 372                        if (err)
 373                                return err;
 374                        fi->next_offset += rinfo->dir_nr;
 375                }
 376        }
 377
 378        rinfo = &fi->last_readdir->r_reply_info;
 379        dout("readdir frag %x num %d off %d chunkoff %d\n", frag,
 380             rinfo->dir_nr, off, fi->offset);
 381        while (off >= fi->offset && off - fi->offset < rinfo->dir_nr) {
 382                u64 pos = ceph_make_fpos(frag, off);
 383                struct ceph_mds_reply_inode *in =
 384                        rinfo->dir_in[off - fi->offset].in;
 385                struct ceph_vino vino;
 386                ino_t ino;
 387
 388                dout("readdir off %d (%d/%d) -> %lld '%.*s' %p\n",
 389                     off, off - fi->offset, rinfo->dir_nr, pos,
 390                     rinfo->dir_dname_len[off - fi->offset],
 391                     rinfo->dir_dname[off - fi->offset], in);
 392                BUG_ON(!in);
 393                ftype = le32_to_cpu(in->mode) >> 12;
 394                vino.ino = le64_to_cpu(in->ino);
 395                vino.snap = le64_to_cpu(in->snapid);
 396                ino = ceph_vino_to_ino(vino);
 397                if (filldir(dirent,
 398                            rinfo->dir_dname[off - fi->offset],
 399                            rinfo->dir_dname_len[off - fi->offset],
 400                            pos,
 401                            ceph_translate_ino(inode->i_sb, ino), ftype) < 0) {
 402                        dout("filldir stopping us...\n");
 403                        return 0;
 404                }
 405                off++;
 406                filp->f_pos = pos + 1;
 407        }
 408
 409        if (fi->last_name) {
 410                ceph_mdsc_put_request(fi->last_readdir);
 411                fi->last_readdir = NULL;
 412                goto more;
 413        }
 414
 415        /* more frags? */
 416        if (!ceph_frag_is_rightmost(frag)) {
 417                frag = ceph_frag_next(frag);
 418                off = 0;
 419                filp->f_pos = ceph_make_fpos(frag, off);
 420                dout("readdir next frag is %x\n", frag);
 421                goto more;
 422        }
 423        fi->flags |= CEPH_F_ATEND;
 424
 425        /*
 426         * if dir_release_count still matches the dir, no dentries
 427         * were released during the whole readdir, and we should have
 428         * the complete dir contents in our cache.
 429         */
 430        spin_lock(&ci->i_ceph_lock);
 431        if (ci->i_release_count == fi->dir_release_count) {
 432                ceph_dir_set_complete(inode);
 433                ci->i_max_offset = filp->f_pos;
 434        }
 435        spin_unlock(&ci->i_ceph_lock);
 436
 437        dout("readdir %p filp %p done.\n", inode, filp);
 438        return 0;
 439}
 440
 441static void reset_readdir(struct ceph_file_info *fi)
 442{
 443        if (fi->last_readdir) {
 444                ceph_mdsc_put_request(fi->last_readdir);
 445                fi->last_readdir = NULL;
 446        }
 447        kfree(fi->last_name);
 448        fi->last_name = NULL;
 449        fi->next_offset = 2;  /* compensate for . and .. */
 450        if (fi->dentry) {
 451                dput(fi->dentry);
 452                fi->dentry = NULL;
 453        }
 454        fi->flags &= ~CEPH_F_ATEND;
 455}
 456
 457static loff_t ceph_dir_llseek(struct file *file, loff_t offset, int origin)
 458{
 459        struct ceph_file_info *fi = file->private_data;
 460        struct inode *inode = file->f_mapping->host;
 461        loff_t old_offset = offset;
 462        loff_t retval;
 463
 464        mutex_lock(&inode->i_mutex);
 465        retval = -EINVAL;
 466        switch (origin) {
 467        case SEEK_END:
 468                offset += inode->i_size + 2;   /* FIXME */
 469                break;
 470        case SEEK_CUR:
 471                offset += file->f_pos;
 472        case SEEK_SET:
 473                break;
 474        default:
 475                goto out;
 476        }
 477
 478        if (offset >= 0 && offset <= inode->i_sb->s_maxbytes) {
 479                if (offset != file->f_pos) {
 480                        file->f_pos = offset;
 481                        file->f_version = 0;
 482                        fi->flags &= ~CEPH_F_ATEND;
 483                }
 484                retval = offset;
 485
 486                /*
 487                 * discard buffered readdir content on seekdir(0), or
 488                 * seek to new frag, or seek prior to current chunk.
 489                 */
 490                if (offset == 0 ||
 491                    fpos_frag(offset) != fpos_frag(old_offset) ||
 492                    fpos_off(offset) < fi->offset) {
 493                        dout("dir_llseek dropping %p content\n", file);
 494                        reset_readdir(fi);
 495                }
 496
 497                /* bump dir_release_count if we did a forward seek */
 498                if (offset > old_offset)
 499                        fi->dir_release_count--;
 500        }
 501out:
 502        mutex_unlock(&inode->i_mutex);
 503        return retval;
 504}
 505
 506/*
 507 * Handle lookups for the hidden .snap directory.
 508 */
 509int ceph_handle_snapdir(struct ceph_mds_request *req,
 510                        struct dentry *dentry, int err)
 511{
 512        struct ceph_fs_client *fsc = ceph_sb_to_client(dentry->d_sb);
 513        struct inode *parent = dentry->d_parent->d_inode; /* we hold i_mutex */
 514
 515        /* .snap dir? */
 516        if (err == -ENOENT &&
 517            ceph_snap(parent) == CEPH_NOSNAP &&
 518            strcmp(dentry->d_name.name,
 519                   fsc->mount_options->snapdir_name) == 0) {
 520                struct inode *inode = ceph_get_snapdir(parent);
 521                dout("ENOENT on snapdir %p '%.*s', linking to snapdir %p\n",
 522                     dentry, dentry->d_name.len, dentry->d_name.name, inode);
 523                BUG_ON(!d_unhashed(dentry));
 524                d_add(dentry, inode);
 525                err = 0;
 526        }
 527        return err;
 528}
 529
 530/*
 531 * Figure out final result of a lookup/open request.
 532 *
 533 * Mainly, make sure we return the final req->r_dentry (if it already
 534 * existed) in place of the original VFS-provided dentry when they
 535 * differ.
 536 *
 537 * Gracefully handle the case where the MDS replies with -ENOENT and
 538 * no trace (which it may do, at its discretion, e.g., if it doesn't
 539 * care to issue a lease on the negative dentry).
 540 */
 541struct dentry *ceph_finish_lookup(struct ceph_mds_request *req,
 542                                  struct dentry *dentry, int err)
 543{
 544        if (err == -ENOENT) {
 545                /* no trace? */
 546                err = 0;
 547                if (!req->r_reply_info.head->is_dentry) {
 548                        dout("ENOENT and no trace, dentry %p inode %p\n",
 549                             dentry, dentry->d_inode);
 550                        if (dentry->d_inode) {
 551                                d_drop(dentry);
 552                                err = -ENOENT;
 553                        } else {
 554                                d_add(dentry, NULL);
 555                        }
 556                }
 557        }
 558        if (err)
 559                dentry = ERR_PTR(err);
 560        else if (dentry != req->r_dentry)
 561                dentry = dget(req->r_dentry);   /* we got spliced */
 562        else
 563                dentry = NULL;
 564        return dentry;
 565}
 566
 567static int is_root_ceph_dentry(struct inode *inode, struct dentry *dentry)
 568{
 569        return ceph_ino(inode) == CEPH_INO_ROOT &&
 570                strncmp(dentry->d_name.name, ".ceph", 5) == 0;
 571}
 572
 573/*
 574 * Look up a single dir entry.  If there is a lookup intent, inform
 575 * the MDS so that it gets our 'caps wanted' value in a single op.
 576 */
 577static struct dentry *ceph_lookup(struct inode *dir, struct dentry *dentry,
 578                                  unsigned int flags)
 579{
 580        struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb);
 581        struct ceph_mds_client *mdsc = fsc->mdsc;
 582        struct ceph_mds_request *req;
 583        int op;
 584        int err;
 585
 586        dout("lookup %p dentry %p '%.*s'\n",
 587             dir, dentry, dentry->d_name.len, dentry->d_name.name);
 588
 589        if (dentry->d_name.len > NAME_MAX)
 590                return ERR_PTR(-ENAMETOOLONG);
 591
 592        err = ceph_init_dentry(dentry);
 593        if (err < 0)
 594                return ERR_PTR(err);
 595
 596        /* can we conclude ENOENT locally? */
 597        if (dentry->d_inode == NULL) {
 598                struct ceph_inode_info *ci = ceph_inode(dir);
 599                struct ceph_dentry_info *di = ceph_dentry(dentry);
 600
 601                spin_lock(&ci->i_ceph_lock);
 602                dout(" dir %p flags are %d\n", dir, ci->i_ceph_flags);
 603                if (strncmp(dentry->d_name.name,
 604                            fsc->mount_options->snapdir_name,
 605                            dentry->d_name.len) &&
 606                    !is_root_ceph_dentry(dir, dentry) &&
 607                    ceph_dir_test_complete(dir) &&
 608                    (__ceph_caps_issued_mask(ci, CEPH_CAP_FILE_SHARED, 1))) {
 609                        spin_unlock(&ci->i_ceph_lock);
 610                        dout(" dir %p complete, -ENOENT\n", dir);
 611                        d_add(dentry, NULL);
 612                        di->lease_shared_gen = ci->i_shared_gen;
 613                        return NULL;
 614                }
 615                spin_unlock(&ci->i_ceph_lock);
 616        }
 617
 618        op = ceph_snap(dir) == CEPH_SNAPDIR ?
 619                CEPH_MDS_OP_LOOKUPSNAP : CEPH_MDS_OP_LOOKUP;
 620        req = ceph_mdsc_create_request(mdsc, op, USE_ANY_MDS);
 621        if (IS_ERR(req))
 622                return ERR_CAST(req);
 623        req->r_dentry = dget(dentry);
 624        req->r_num_caps = 2;
 625        /* we only need inode linkage */
 626        req->r_args.getattr.mask = cpu_to_le32(CEPH_STAT_CAP_INODE);
 627        req->r_locked_dir = dir;
 628        err = ceph_mdsc_do_request(mdsc, NULL, req);
 629        err = ceph_handle_snapdir(req, dentry, err);
 630        dentry = ceph_finish_lookup(req, dentry, err);
 631        ceph_mdsc_put_request(req);  /* will dput(dentry) */
 632        dout("lookup result=%p\n", dentry);
 633        return dentry;
 634}
 635
 636/*
 637 * If we do a create but get no trace back from the MDS, follow up with
 638 * a lookup (the VFS expects us to link up the provided dentry).
 639 */
 640int ceph_handle_notrace_create(struct inode *dir, struct dentry *dentry)
 641{
 642        struct dentry *result = ceph_lookup(dir, dentry, 0);
 643
 644        if (result && !IS_ERR(result)) {
 645                /*
 646                 * We created the item, then did a lookup, and found
 647                 * it was already linked to another inode we already
 648                 * had in our cache (and thus got spliced).  Link our
 649                 * dentry to that inode, but don't hash it, just in
 650                 * case the VFS wants to dereference it.
 651                 */
 652                BUG_ON(!result->d_inode);
 653                d_instantiate(dentry, result->d_inode);
 654                return 0;
 655        }
 656        return PTR_ERR(result);
 657}
 658
 659static int ceph_mknod(struct inode *dir, struct dentry *dentry,
 660                      umode_t mode, dev_t rdev)
 661{
 662        struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb);
 663        struct ceph_mds_client *mdsc = fsc->mdsc;
 664        struct ceph_mds_request *req;
 665        int err;
 666
 667        if (ceph_snap(dir) != CEPH_NOSNAP)
 668                return -EROFS;
 669
 670        dout("mknod in dir %p dentry %p mode 0%ho rdev %d\n",
 671             dir, dentry, mode, rdev);
 672        req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_MKNOD, USE_AUTH_MDS);
 673        if (IS_ERR(req)) {
 674                d_drop(dentry);
 675                return PTR_ERR(req);
 676        }
 677        req->r_dentry = dget(dentry);
 678        req->r_num_caps = 2;
 679        req->r_locked_dir = dir;
 680        req->r_args.mknod.mode = cpu_to_le32(mode);
 681        req->r_args.mknod.rdev = cpu_to_le32(rdev);
 682        req->r_dentry_drop = CEPH_CAP_FILE_SHARED;
 683        req->r_dentry_unless = CEPH_CAP_FILE_EXCL;
 684        err = ceph_mdsc_do_request(mdsc, dir, req);
 685        if (!err && !req->r_reply_info.head->is_dentry)
 686                err = ceph_handle_notrace_create(dir, dentry);
 687        ceph_mdsc_put_request(req);
 688        if (err)
 689                d_drop(dentry);
 690        return err;
 691}
 692
 693static int ceph_create(struct inode *dir, struct dentry *dentry, umode_t mode,
 694                       bool excl)
 695{
 696        return ceph_mknod(dir, dentry, mode, 0);
 697}
 698
 699static int ceph_symlink(struct inode *dir, struct dentry *dentry,
 700                            const char *dest)
 701{
 702        struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb);
 703        struct ceph_mds_client *mdsc = fsc->mdsc;
 704        struct ceph_mds_request *req;
 705        int err;
 706
 707        if (ceph_snap(dir) != CEPH_NOSNAP)
 708                return -EROFS;
 709
 710        dout("symlink in dir %p dentry %p to '%s'\n", dir, dentry, dest);
 711        req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SYMLINK, USE_AUTH_MDS);
 712        if (IS_ERR(req)) {
 713                d_drop(dentry);
 714                return PTR_ERR(req);
 715        }
 716        req->r_dentry = dget(dentry);
 717        req->r_num_caps = 2;
 718        req->r_path2 = kstrdup(dest, GFP_NOFS);
 719        req->r_locked_dir = dir;
 720        req->r_dentry_drop = CEPH_CAP_FILE_SHARED;
 721        req->r_dentry_unless = CEPH_CAP_FILE_EXCL;
 722        err = ceph_mdsc_do_request(mdsc, dir, req);
 723        if (!err && !req->r_reply_info.head->is_dentry)
 724                err = ceph_handle_notrace_create(dir, dentry);
 725        ceph_mdsc_put_request(req);
 726        if (err)
 727                d_drop(dentry);
 728        return err;
 729}
 730
 731static int ceph_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
 732{
 733        struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb);
 734        struct ceph_mds_client *mdsc = fsc->mdsc;
 735        struct ceph_mds_request *req;
 736        int err = -EROFS;
 737        int op;
 738
 739        if (ceph_snap(dir) == CEPH_SNAPDIR) {
 740                /* mkdir .snap/foo is a MKSNAP */
 741                op = CEPH_MDS_OP_MKSNAP;
 742                dout("mksnap dir %p snap '%.*s' dn %p\n", dir,
 743                     dentry->d_name.len, dentry->d_name.name, dentry);
 744        } else if (ceph_snap(dir) == CEPH_NOSNAP) {
 745                dout("mkdir dir %p dn %p mode 0%ho\n", dir, dentry, mode);
 746                op = CEPH_MDS_OP_MKDIR;
 747        } else {
 748                goto out;
 749        }
 750        req = ceph_mdsc_create_request(mdsc, op, USE_AUTH_MDS);
 751        if (IS_ERR(req)) {
 752                err = PTR_ERR(req);
 753                goto out;
 754        }
 755
 756        req->r_dentry = dget(dentry);
 757        req->r_num_caps = 2;
 758        req->r_locked_dir = dir;
 759        req->r_args.mkdir.mode = cpu_to_le32(mode);
 760        req->r_dentry_drop = CEPH_CAP_FILE_SHARED;
 761        req->r_dentry_unless = CEPH_CAP_FILE_EXCL;
 762        err = ceph_mdsc_do_request(mdsc, dir, req);
 763        if (!err && !req->r_reply_info.head->is_dentry)
 764                err = ceph_handle_notrace_create(dir, dentry);
 765        ceph_mdsc_put_request(req);
 766out:
 767        if (err < 0)
 768                d_drop(dentry);
 769        return err;
 770}
 771
 772static int ceph_link(struct dentry *old_dentry, struct inode *dir,
 773                     struct dentry *dentry)
 774{
 775        struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb);
 776        struct ceph_mds_client *mdsc = fsc->mdsc;
 777        struct ceph_mds_request *req;
 778        int err;
 779
 780        if (ceph_snap(dir) != CEPH_NOSNAP)
 781                return -EROFS;
 782
 783        dout("link in dir %p old_dentry %p dentry %p\n", dir,
 784             old_dentry, dentry);
 785        req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_LINK, USE_AUTH_MDS);
 786        if (IS_ERR(req)) {
 787                d_drop(dentry);
 788                return PTR_ERR(req);
 789        }
 790        req->r_dentry = dget(dentry);
 791        req->r_num_caps = 2;
 792        req->r_old_dentry = dget(old_dentry); /* or inode? hrm. */
 793        req->r_old_dentry_dir = ceph_get_dentry_parent_inode(old_dentry);
 794        req->r_locked_dir = dir;
 795        req->r_dentry_drop = CEPH_CAP_FILE_SHARED;
 796        req->r_dentry_unless = CEPH_CAP_FILE_EXCL;
 797        err = ceph_mdsc_do_request(mdsc, dir, req);
 798        if (err) {
 799                d_drop(dentry);
 800        } else if (!req->r_reply_info.head->is_dentry) {
 801                ihold(old_dentry->d_inode);
 802                d_instantiate(dentry, old_dentry->d_inode);
 803        }
 804        ceph_mdsc_put_request(req);
 805        return err;
 806}
 807
 808/*
 809 * For a soon-to-be unlinked file, drop the AUTH_RDCACHE caps.  If it
 810 * looks like the link count will hit 0, drop any other caps (other
 811 * than PIN) we don't specifically want (due to the file still being
 812 * open).
 813 */
 814static int drop_caps_for_unlink(struct inode *inode)
 815{
 816        struct ceph_inode_info *ci = ceph_inode(inode);
 817        int drop = CEPH_CAP_LINK_SHARED | CEPH_CAP_LINK_EXCL;
 818
 819        spin_lock(&ci->i_ceph_lock);
 820        if (inode->i_nlink == 1) {
 821                drop |= ~(__ceph_caps_wanted(ci) | CEPH_CAP_PIN);
 822                ci->i_ceph_flags |= CEPH_I_NODELAY;
 823        }
 824        spin_unlock(&ci->i_ceph_lock);
 825        return drop;
 826}
 827
 828/*
 829 * rmdir and unlink are differ only by the metadata op code
 830 */
 831static int ceph_unlink(struct inode *dir, struct dentry *dentry)
 832{
 833        struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb);
 834        struct ceph_mds_client *mdsc = fsc->mdsc;
 835        struct inode *inode = dentry->d_inode;
 836        struct ceph_mds_request *req;
 837        int err = -EROFS;
 838        int op;
 839
 840        if (ceph_snap(dir) == CEPH_SNAPDIR) {
 841                /* rmdir .snap/foo is RMSNAP */
 842                dout("rmsnap dir %p '%.*s' dn %p\n", dir, dentry->d_name.len,
 843                     dentry->d_name.name, dentry);
 844                op = CEPH_MDS_OP_RMSNAP;
 845        } else if (ceph_snap(dir) == CEPH_NOSNAP) {
 846                dout("unlink/rmdir dir %p dn %p inode %p\n",
 847                     dir, dentry, inode);
 848                op = S_ISDIR(dentry->d_inode->i_mode) ?
 849                        CEPH_MDS_OP_RMDIR : CEPH_MDS_OP_UNLINK;
 850        } else
 851                goto out;
 852        req = ceph_mdsc_create_request(mdsc, op, USE_AUTH_MDS);
 853        if (IS_ERR(req)) {
 854                err = PTR_ERR(req);
 855                goto out;
 856        }
 857        req->r_dentry = dget(dentry);
 858        req->r_num_caps = 2;
 859        req->r_locked_dir = dir;
 860        req->r_dentry_drop = CEPH_CAP_FILE_SHARED;
 861        req->r_dentry_unless = CEPH_CAP_FILE_EXCL;
 862        req->r_inode_drop = drop_caps_for_unlink(inode);
 863        err = ceph_mdsc_do_request(mdsc, dir, req);
 864        if (!err && !req->r_reply_info.head->is_dentry)
 865                d_delete(dentry);
 866        ceph_mdsc_put_request(req);
 867out:
 868        return err;
 869}
 870
 871static int ceph_rename(struct inode *old_dir, struct dentry *old_dentry,
 872                       struct inode *new_dir, struct dentry *new_dentry)
 873{
 874        struct ceph_fs_client *fsc = ceph_sb_to_client(old_dir->i_sb);
 875        struct ceph_mds_client *mdsc = fsc->mdsc;
 876        struct ceph_mds_request *req;
 877        int err;
 878
 879        if (ceph_snap(old_dir) != ceph_snap(new_dir))
 880                return -EXDEV;
 881        if (ceph_snap(old_dir) != CEPH_NOSNAP ||
 882            ceph_snap(new_dir) != CEPH_NOSNAP)
 883                return -EROFS;
 884        dout("rename dir %p dentry %p to dir %p dentry %p\n",
 885             old_dir, old_dentry, new_dir, new_dentry);
 886        req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_RENAME, USE_AUTH_MDS);
 887        if (IS_ERR(req))
 888                return PTR_ERR(req);
 889        req->r_dentry = dget(new_dentry);
 890        req->r_num_caps = 2;
 891        req->r_old_dentry = dget(old_dentry);
 892        req->r_old_dentry_dir = ceph_get_dentry_parent_inode(old_dentry);
 893        req->r_locked_dir = new_dir;
 894        req->r_old_dentry_drop+code=CEPH_CAP_FILE_SHARED" class="sref">CEPH_CAP_FILE_SHARED;
);
r_dentry_unlesrop+code=CEs="sreef="+code=CEPH_CAP_FILE_EXCL" class="sref">CEPH_CAP_FILE_EXCL;
 796req->r_dentry_drop = CEPH_CAP_FILE_SHARED;
 797req->r_dentry_unless = CEPH_CAP_FILE_EXCL;
 798/* rmdir .snap/felease >;
 = it)a href="fs/ceph/dir.c#L842" id="L842" class="8ine" name="L799"> 799req->r_inode_dropCEPH_CAP_LINK_SHARED |  800new_dentry);
d_inode);
 891req->r_inode_drop = drop_caps_for_unlink(new_dentry);
d_inode);
 892err = ceph_mdsc_do_request(mdsc, old_dir, req);
 803err && !req->r_reply_info.head->is_dentry)
 804/*
 805 */
( (due eddatref="fs/ceph/dir.c#L829" id="L829"6class="9ine" name="L796"> 796 */
(
(,t spneef="f="fs/ceph/dir.c#L829" id="L829"7class="9ine" name="L797"> 797 */
 808/*
 809 810/* rmdir .snap/d_move screws up/d_subid=s ordera*href="fs/ceph/dir.c#L842" id="L849" class="9ine" name="L811"> 811d_delete_requid=_clea=_comp"sre="+code=new_dir" class="sref">new_dir) !=  812 813d_inode);
move="+code=old_dentry" class="sref">old_dentry);
new_dentry);
 814 815/* rmdir .snap/ensuhe/target;p\n&quo 816 */
 817 =leasef">d_delete_requinvalidatess =lease="+code=new_dentry" class="sref">new_dentry);
 818 819ceph_mdsc_put_request(req);
 820err;
 821 822 823 */
< href="fs/ceph/dir.c#L829" id="L829" class="9ine" name="L824"> 824 * rmdir and unEnsuhe/a;p\n&quolease drop no longerarevalidatehref="fs/ceph/dir.c#L813" id="L819" class="9ine" name="L825"> 825 */
 826 =leasef">d_delete_requinvalidatess =lease="+coef="+code=dentry" class="sref">dentry *dentry)
 827 828spin_lock(&dentry->spin_lock 829dentry->d_name.r_dentry_unljiffieef="fs/ceph/dir.c#L869" id="L869" class="9ine" name="L830"> 830dentry-&_requi="sre="+code=req" class="s="sref">dentry)
len,
 831spin_unlock(&dentry->spin_lock 832 833 834 * rmdir and href="fs/ceph/dir.c#L829" id="L829" class="9ine" name="L835"> 835 */

Tquotoref="fs/ceph/dir.c#L829" id="L829" class="9ine" name="L836"> 836 */
) if;nt wieast  837 */
 838dentry->dentry *dentry)
 839 840ceph_inode_infoci-> 841len,
r_dentry_unlef="fs/ceph/dir.c#L869" id="L869" class="9ine" name="L842"> 842dentry-&valid="+c+co0s/ceph/dir.c#L869" id="L869" class="9ine" name="L843"> 843len,
 844len,
 845len,
len,
CEPH_CAP_FILNULeef="s/ceph/dir.c#L869" id="L869" class="9ine" name="L846"> 846inode *dir, struct CEPH_CAP_FILNULeef="s/ceph/dir.c#L869" id="L869" class="9ine" name="L847"> 847req);
 848 849spin_lock(&dentry->spin_lock 850ci->dentry-&_requi="sre="+code=req" class="s="sref">dentry)
 851ci->len,
 852r_dentry_unlef="f+code=dir" class="srf">ci->len,
 853spin_lock(&r_dentry_unlef="f="+code=d_inode" clas_gre_ttl="sref">spin_lock_gre_ttl="sref="fss/ceph/dir.c#L825" id="L829" class="9ine" name="L854"> 854len,
r_dentry_unlef="f="+code=d_inode" clas_cap_gref">len,
 855len,
r_dentry_unlef="f="+code=d_inode" clas_cap_ttlf">len,
 856spin_unlock(&r_dentry_unlef="f="+code=d_inode" clas_gre_ttl="sref">spin_lock_gre_ttl="sref="fss/ceph/dir.c#L825" id="L829" class="9ine" name="L857"> 857 858ci->len,
len,
 859inode *r_dentry_unljiffieef="fcode=dentry" class="sref">dentry->d_name. 860inode *r_dentry_unljiffieef="fcode=dentry" clasttlf">len,
 861dentry-&valid="+c+co1+/ceph/dir.c#L828" id="L829" class="9ine" name="L862"> 862ci->)_afteef">dir, strlease_fea>)_afteeef="+ 863dir, strtime_aftee="+code=req" class="jiffieef">r_dentry_unljiffieef="fcode=dentry" classef">ci->)_afteef">dir, strlease_fea>)_afteeef="="fs/ceph/dir.c#L854" id="L859" class="9ine" name="L864"> 864/* rmdir .snap/we should/fea>) *href="fs/ceph/dir.c#L842" id="L849" class="9ine" name="L865"> 865dir, struct dentry->(d_name.(d_inode;
 866len,
len,
r_dentry_unlef="fss/ceph/dir.c#L825" id="L829" class="9ine" name="L867"> 867req);
ci->req);
 868ci->)_afteef">dir, strlease_fea>)_afteeef="+co0s/ceph/dir.c#L869" id="L869" class="9ine" name="L869"> 869ci->)_fromf">dir, strlease_fea>)_fromef="+code=ceph_mdsc_dojiffieef">r_dentry_unljiffieef="fs/ceph/dir.c#L869" id="L869" class="9ine" name="L870"> 870 871 872 873spin_unlock(&dentry->spin_lock 874 875len,
 876len,
len,
dir, dentry-> 877dentry-&RENAMEreq);
 878(classessioef">len,
(classessioe="+code=req" class="eessioef">len,
 879 880dout("rename dir >, dentry->dentry-&valid="+cfs/ceph/dir.c#L825" id="L829" class="9ine" name="L881"> 881dentry-&valid="+cs/ceph/dir.c#L825" id="L829" class="9ine" name="L882"> 882 883 884 * rmdir and href="fs/ceph/dir.c#L829" id="L829" class="9ine" name="L885"> 885 */
wiease/cap  886 */
 887dentry-&gir=lease_is_validlass=ef="+code=inode" class="sref">inode *dir, struct dentry *dentry)
 888 889 = <"sref">ceph_inode_info = <"sref="+code=dentry" clasref">ci->ceph_get_dentry_p href="+code=old_dentry" sref">dir, struct  890ceph_inode_infoci->dentry-&_requi="sre="+code=req" class="s="sref">dentry)
 891dentry-&valid="+c+co0s/ceph/dir.c#L869" id="L869" class="9ine" name="L892"> 892 893spin_lock(&ci->spin_lock 894ci->len,
ci->len,
);
dentry-&valid="+c+code=req" class="_s_requinkspin_lockci->CEPH_CAP_FILE_SHARED;
 796spin_unlock(&ci->spin_lock 797dout("rename dir &gir=lease_is_validdentry %vy u;p to dir %vy u;=ir dan>,  798dir, struct ci->len,
dentry-> 799ci->len,
dentry-&valid="+cfs/ceph/dir.c#L825" id="L8210" class="10" cl name="L799"> 79910" if (dentry-&valid="+cs/c/pre>dentrydoneclass=39/57/681e5fc548d47c6161f134a2505d4e81b619_3/10" c>ceph/dir.c#L825" id="L8210"1class="10"ne" name="L891"> 89110"     s/ceph/dir.c#L870" id="L8710"2class="10"ne" name="L892"> 89210"f="fs/ceph/dir.c#L783" id="L7810"3class="10"ne" name="L893"> 89310"lass="comment"> */
< href="fs/ceph/dir.c#L829" id="L8210"4class="10"ne" name="L894"> 89410"  * rmdir and unChe = if;cached;p to dicmmebe f="stedaref="fs/ceph/dir.c#L829" id="L8210"5class="10"ef="fs/cephq);
10" retu"comment"> */
 79610"6if (a href="+code=drop_caps_fo_requi_revalidatef">dentry-&_requi_revalidatelass=ef="+code=inode" classs="sref">dentry *dentry)
r_dentry_unlflageef="s/ceph/dir.c#L832" id="L8310"7class="10"ne" name="L797"> 79710"f="fss/ceph/dir.c#L854" id="L8510"8class="10"ne" name="L798"> 79810"         dentry-&valid="+c+co0s/ceph/dir.c#L869" id="L8610"9class="10"ne" name="L799"> 79910" inode *dir, struct  81010in="fs/ceph/dir.c#L783" id="L781011class="10ine" name="L811"> 81110i if (r_dentry_unlflageef="+r_dentry_unlLOOKUP_RCUef="s/ceph/dir.c#L832" id="L831012class="10ine" name="L812"> 81210i                strucref="+code=EROFS" class=CHILef">CEPH_CAP_FIL=CHILe  81310i stru/ceph/dir.c#L870" id="L8710i4class="10ine" name="L814"> 81410i dout("rename dir &i_revalidateir %r &9;r .*sr &9;p\n&quor %offsetor lldan>, dentry-> 81510i      dentry->spin_locklen,
dentry->spin_lockspin_lockdentry->d_inode;
 81610i         dentry-&_requi="sre="+code=req" class="s="sref">dentry)
dentry)
offset="+cfs/ceph/dir.c#L825" id="L821017class="10ine" name="L817"> 81710if="fs/ceph/dir.c#L828" id="L8210i8class="10ine" name="L818"> 81810i dir, struct ceph_get_dentry_parent_inode(dentry)
 81910if="fs/ceph/dir.c#L840" id="L84102 class="10ine" name="L820"> 82010in/* rmdir .snap/always f="st;cached;hrefped;p to ies,;hrefentrp to di*href="fs/ceph/dir.c#L842" id="L841021class="10ine" name="L821"> 82110i if (ceph_snap(dir, struct CEPH_NOSNAP)
 82210i                strucde=dentry" clas"sref">dout("rename dir &i_revalidateir %r &9;r .*sr &9;p\n&quor %is  hrePEDan>, dentry-> 82310i         return -dentry->spin_locklen,
dentry->spin_lockspin_lockdentry->d_inode;
 82410i         dentry-&valid="+c+co1+/ceph/dir.c#L828" id="L8210i5class="10ine" name="L825"> 82510i      dentry->d_inode;
 82610i         ceph_snap(dentry->d_inode;
PTR_ERR(/a>)
 hreDIef="fsfs/ceph/dir.c#L854" id="L8510i7class="10ine" name="L827"> 82710i         dentry-&valid="+c+co1+/ceph/dir.c#L828" id="L8210i8class="10ine" name="L828"> 82810i8     dentry->dentry)
 82910i                 dentry-&gir=lease_is_validlass=de=dir" class="sref">dir, struct dentry)
 83010in        dentry-&valid="+c+co1+/ceph/dir.c#L828" id="L821031class="10ine" name="L831"> 83110i if ( 83210if="fs/ceph/dir.c#L783" id="L781033class="10ine" name="L833"> 83310i dout("rename dir &i_revalidateir %r &7;san>, dentry->dentry-&valid="+c ? "string">"rename dir &valid>, "rename dir &invalid>,  83410i dentry-&valid="+cf/ceph/dir.c#L825" id="L821035class="10ine" name="L835"> 83510i         goto dentry-&_requi="sre=lru_touch="+code=old_dentry" s="sref">dentry)
 83610i          83710i         r_inode_dropddentry)
 83810i dout(dir, struct  83910i             ef="+code=err" class="validf">dentry-&valid="+cs/ceph/dir.c#L825" id="L82104 class="10ine" name="L840"> 84010in    s/ceph/dir.c#L870" id="L871041class="10ine" name="L841"> 84110i1="fs/ceph/dir.c#L783" id="L781042class="10ine" name="L842"> 84210i2ass="comment"> */
< href="fs/ceph/dir.c#L829" id="L821043class="10ine" name="L843"> 84310ilass="comment"> */
< * Release our nfo 84410i  * rmdir and uhref="fs/ceph/dir.c#L842" id="L841045class="10ine" name="L845"> 84510i5if (a href=voidode=d_drop" clas_requi_releasef">d_delete_requi_releaselass=ef="+code=inode" classs="sref">dentry *dentry)
 84610i6="fss/ceph/dir.c#L854" id="L851047class="10ine" name="L847"> 84710i         ceph_inode_infoci->dentry-&_requi="sre="+code=req" class="s="sref">dentry)
 84810if="fs/ceph/dir.c#L879" id="L8710i9class="10ine" name="L849"> 84910i dout("rename dir &i_release t;,
dentry)
 85010inlen,
dentry)
 85110i if (ci->len,
 85210i                strucde=dentry" clasuest"/a>(classessioef">len,
(classessioe="+code=req" class="sef">ci->len,
 85310i d_deletekme 2;
che_free="+code=req" class="_requi="sre=;
cheef">ceph_snap(ci-> 85410i dentry->r_inode_dropdCEPH_CAP_FILNULeef="s/ceph/dir.c#L869" id="L8610i5class="10ine" name="L855"> 85510i5    s/ceph/dir.c#L870" id="L871056class="10ine" name="L856"> 85610i6="fs/ceph/dir.c#L879" id="L871057class="10ine" name="L857"> 85710i if (a href="+code=drop_caps_fo>(dentry-&_requhrefgir=i_revalidatelass=ef="+code=inode" classs="sref">dentry *dentry)
 85810i         return r_dentry_unlflageef="s/ceph/dir.c#L832" id="L831059class="10ine" name="L859"> 85910if="fss/ceph/dir.c#L854" id="L85106 class="10ine" name="L860"> 86010in/* rmdir .snapref="fs/ceph/dir.c#L842" id="L841061class="10ine" name="L861"> 86110i1 * rmdir and         * Evr auue t,t sr &9;ll wa+cotoarevalidate;hrefped;metadataf=f="fs/ceph/dir.c#L842" id="L841062class="10ine" name="L862"> 86210i2ass="comment"> */
<         * too... probably...f=f="fs/ceph/dir.c#L842" id="L841063class="10ine" name="L863"> 86310ilass="comment"> */
<         *href="fs/ceph/dir.c#L842" id="L841064class="10ine" name="L864"> 86410i  86510i5    s/ceph/dir.c#L870" id="L871066class="10ine" name="L866"> 86610i6="fs/ceph/dir.c#L879" id="L871067class="10ine" name="L867"> 86710if="fs"comment"> */
 86810ilass="comment">/*
 86910i9 * rmdir and uhref="fs/ceph/dir.c#L842" id="L84107 class="10ine" name="L870"> 87010ind_delete_requid=_set_comp"srelass=ef="+code=inode" class="sref">inode *inode * 87110i1="fss/ceph/dir.c#L854" id="L851072class="10ine" name="L872"> 87210i             ef="+code=inode" classs="sref">dentry *dentry)
r_dentry_unls_find_any_aliae="+code=req" class="="sref">inode * 87310i  87410i dentry)
dentry-&_requi="sre="+code=req" class="s="sref">dentry)
 87510i         goto ceph_mdsc_put_reqtest_mount_ope="+code=req" class="_requsb_to_clie(d_name.<_requsb_to_clie(<="+code=old_dir" clas="sref">dentry->r_dentry_unls_sbf="fshrde=old_dentry"   If if">r_dentry_unl  If if="fssfs/ceph/dir.c#L854" id="L851076class="10ine" name="L876"> 87610i         dout("rename dir & marking r %(r %)rcomp"srean>,
inode *dentry)
 87710i         dout()
D_COMPLETif">r_dentry_unl/a>)
D_COMPLETif="+sr="+code=ci" class="srrequi="sref">dentry-&_requi="sre="+code=req" class="s="sref">dentry)
r_dentry_unlflageef="ss/ceph/dir.c#L825" id="L821078class="10ine" name="L878"> 87810i if ( 87910i dout(dentry)
 88010in    s/ceph/dir.c#L870" id="L871081class="10ine" name="L881"> 88110i1="fs/ceph/dir.c#L783" id="L781082class="10ine" name="L882"> 88210i2d_delete_requid=_clea=_comp"sre="+coef="+code=inode" class="sref">inode *inode * 88310i3="fss/ceph/dir.c#L854" id="L851084class="10ine" name="L884"> 88410i dentry *dentry)
r_dentry_unls_find_any_aliae="+code=req" class="="sref">inode * 88510i5="fs/ceph/dir.c#L783" id="L781086class="10ine" name="L886"> 88610i         dentry)
dentry-&_requi="sre="+code=req" class="s="sref">dentry)
 88710i         dout("rename dir & marking r %(r %)rcomp"srean>,
inode *dentry)
 88810i         dout()
D_COMPLETif">r_dentry_unl/a>)
D_COMPLETif="+sr="+code=ci" class="srrequi="sref">dentry-&_requi="sre="+code=req" class="s="sref">dentry)
r_dentry_unlflageef="ss/ceph/dir.c#L825" id="L821089class="10ine" name="L889"> 88910i if ( 89010indout(dentry)
 89110i     s/ceph/dir.c#L870" id="L871092class="10ine" name="L892"> 89210if="fs/ceph/dir.c#L783" id="L781093class="10ine" name="L893"> 89310ilass="e=old_dir" claboolf">len,
d_delete_requid=_test_comp"sre="+coef="+code=inode" class="sref">inode *inode * 89410i4="fss/ceph/dir.c#L854" id="L851095class="10ref="fs/cephq);
10i struct dentry *dentry)
r_dentry_unls_find_any_aliae="+code=req" class="="sref">inode * 79610i6="fs/ceph/dir.c#L879" id="L871097class="10ine" name="L797"> 79710i7        dentry)
dentry-&_requi="sre="+code=req" class="s="sref">dentry)
 79810i         dout("rename dir & marking r %(r %)rNOTrcomp"srean>,
inode *dentry)
 79910i                 dout()
D_COMPLETif">r_dentry_unl/a>)
D_COMPLETif="+sr="+code=ci" class="srrequi="sref">dentry-&_requi="sre="+code=req" class="s="sref">dentry)
r_dentry_unlflageef="ss/ceph/dir.c#L825" id="L8211" class="11" cl name="L799"> 79911" if ( 891110 dout(dentry)
 892110             ef="+code=err" class="falsef">d_deletefalseef="s/ceph/dir.c#L869" id="L8611"3class="11"ne" name="L893"> 89311"lass=s/ceph/dir.c#L870" id="L8711"4class="11"ne" name="L894"> 894110int 11" retu"comment"> */
 796110ef="f"comment"> */
 797110f="fs"comment"> */
(<;pirectory.f=f="fs/ceph/dir.c#L842" id="L8411"8class="11"ne" name="L798"> 798110lass="comment">/*
 7991109 * rmdir and u Calledoundetrp to d="+cod 81011in="fs"comment"> * rmdir and uhref="fs/ceph/dir.c#L842" id="L841111class="11ine" name="L811"> 81111i if (a href=voidode=d_drop" clas_requi_prunef">dentry-&_requi_prunelass=ef="+code=inode" classs="sref">dentry *dentry)
 81211i     s/ceph/dir.c#L854" id="L851113class="11ine" name="L813"> 813111 ceph_inode_infoci-> 814111int  81511i      dout("rename dir &_requi_prune t;,
dentry)
 8161116="fs/ceph/dir.c#L879" id="L871117class="11ine" name="L817"> 817111 /* rmdir .snap/dot s have arvalidd( 81811i dentry)
IS_ROOT="+code=req" class="s="sref">dentry)
 819111                  820112n="fs/ceph/dir.c#L783" id="L781121class="11ine" name="L821"> 82111i if (/* rmdir .snap/"+c s /a> not hashed,t s donr &9;t affect D_COMPLETi uhref="fs/ceph/dir.c#L842" id="L8411i2class="11ine" name="L822"> 82211i             "+code=ceph_snap" cs_unhashedf">r_dentry_unls_unhashed="+code=req" class="s="sref">dentry)
 82311i         return - 824112int  82511i       */
 826112ef="f"comment"> */
(<;is a hble,tand d 827112f="fs"comment"> */
 828112lass="comment">/*
 829112 ci->dentry-&_requi="sre="+code=req" class="s="sref">dentry)
(d_name.( 830113ndout()
D_COMPLETif">r_dentry_unl/a>)
D_COMPLETif="+sr="+code=ci" class="ssef">ci->r_dentry_unlflageef="ss/ceph/dir.c#L825" id="L821131class="11ine" name="L831"> 831113     s/ceph/dir.c#L870" id="L871132class="11ine" name="L832"> 83211if="fs/ceph/dir.c#L783" id="L781133class="11ine" name="L833"> 833113lass="comment"> */
< href="fs/ceph/dir.c#L829" id="L821134class="11ine" name="L834"> 834113  * rmdir and unread()ton a;pir.  This weird "+cerfacs hacktonly works "+cmounted="f="fs/ceph/dir.c#L829" id="L821135class="11ine" name="L835"> 835113 retu"comment"> */
 836113ef="f"comment"> */
 837113 if (a href=de=op" class="sssize_ef">dout(dir, str_requread_srelass=ef="+code=inode" classfilef">d_deletefilef="+code=dentry" clasfilef">d_deletefilef="+, charode=req" class="_suseef">dir, str_suseef="+code=dentry" clasbuff">len,
dout(dout( 838113         return dout(r_dentry_unlppoef="fs/ceph/dir.c#L832" id="L831139class="11ine" name="L839"> 839113f="fss/ceph/dir.c#L854" id="L85114 class="11ine" name="L840"> 840114 if (ceph_inode_infolen,
d_deletefilef="+="+code=d_inode" claprivate_dataf">r_inode_dropprivate_dataf="fs/ceph/dir.c#L869" id="L861141class="11ine" name="L841"> 8411141if (inode *inode *d_deletefilef="+="+code=d_inode" clafui="sref">dentry-&f_d_inode;
 842114             ef="+code=inode" classnfo = <"sref">ceph_inode_info = <"sref="+code=dentry" clasref">ci->ceph_get_dentry_p href="+code=old_dentry" ="sref">inode * 843114         retu"+code=drop_caps_folefef">dout( 844114 dout( 8451145="fs/ceph/dir.c#L783" id="L781146class="11ine" name="L846"> 846114         ceph_mdsc_put_reqtest_mount_ope="+code=req" class="_requsb_to_clie(d_name.<_requsb_to_clie(<="+code=old_dir" cla="sref">inode *r_dentry_unli_sbf="fshrde=old_dentry"  IRSTATf">dentry)
 IRSTATf="fss/ceph/dir.c#L842" id="L841147class="11ine" name="L847"> 847114         PTR_ERR(=ISDIef="fs/ceph/dir.c#L836" id="L831148class="11ine" name="L848"> 84811if="fs/ceph/dir.c#L879" id="L8711i9class="11ine" name="L849"> 84911i len,
ceph_inode_isir<"sref="fsfs/ceph/dir.c#L854" id="L85115 class="11ine" name="L850"> 850115n        len,
ceph_inode_isir<"sref="fccode=ceph_mdsc_dokmallocf">ceph_inode_ikmalloc="+code=old_dir" clabufsizef">dout(dout( 851115         len,
ceph_inode_isir<"sref="fs/ceph/dir.c#L828" id="L821152class="11ine" name="L852"> 85211i                strucref="+coref="+code=EROFS" class=NOMEMf">PTR_ERR(=NOMEMf="fs/ceph/dir.c#L836" id="L831153class="11ine" name="L853"> 853115         return -len,
len,
 85411i len,
len,
ceph_inode_isir<"sref="fhrde=old_dentry" bufsizef">dout( 855115         goto "rename dir &a hries:a ht;,  856115         "rename dir & files:a hht;,  857115              "rename dir & subpira:hht;,  85811i         return "rename dir &ra hries:a t;,  859115                 "rename dir & rfiles:a ht;,  860116n        "rename dir & rsubpira:ht;,  861116         "rename dir &rbytes:a hht;,  862116                strucref="+co"rename dir &rctime:a hht;,  863116         return -ci->r_dentry_unli_files     +fde=dentry" clasref">ci->r_dentry_unli_subpirahrefh/ceph/dir.c#L836" id="L831164class="11ine" name="L864"> 864116 ci->r_dentry_unli_files    h/ceph/dir.c#L836" id="L831165class="11ine" name="L865"> 865116         goto ci->r_dentry_unli_subpirahrefh/ceph/dir.c#L836" id="L831166class="11ine" name="L866"> 866116         ci->r_dentry_unli_rfiles     +fde=dentry" clasref">ci->r_dentry_unli_rsubpirahrefh/ceph/dir.c#L836" id="L831167class="11ine" name="L867"> 867116              ci->r_dentry_unli_rfiles    h/ceph/dir.c#L836" id="L831168class="11ine" name="L868"> 868116         return ci->r_dentry_unli_rsubpirahrefh/ceph/dir.c#L836" id="L831169class="11ine" name="L869"> 869116                 ci->r_dentry_unli_rbyteshrefh/ceph/dir.c#L836" id="L83117 class="11ine" name="L870"> 870117n        ci->r_dentry_unli_rctimehrefode=head" class=tv_secf">ceph_inode_itv_sechrefh/ceph/dir.c#L836" id="L831171class="11ine" name="L871"> 871117         ci->r_dentry_unli_rctimehrefode=head" class=tv_nsecf">ceph_inode_itv_nsechrefs+/ceph/dir.c#L828" id="L821172class="11ine" name="L872"> 87211i             s/ceph/dir.c#L870" id="L871173class="11ine" name="L873"> 873117 stru/ceph/dir.c#L870" id="L871174class="11ine" name="L874"> 87411i r_dentry_unlppoef="f "+cocode=ceph_mdsc_dotff">len,
len,
 87511i         goto  876117 dout(dout(dout(len,
len,
r_dentry_unlppoef="fss/ceph/dir.c#L869" id="L861177class="11ine" name="L877"> 877117 dout(dir, strtopy_to_usee="+code=old_dir" clabuff">len,
len,
ceph_inode_isir<"sref="fc+code=dentry" clasppoef">r_dentry_unlppoef="fsrde=old_dentry" sizef">dout( 878117 dout(dout( 879117                 dentry)
=FAULTf="fs/ceph/dir.c#L836" id="L83118 class="11ine" name="L880"> 880118n        r_dentry_unlppoef="f +=code=ceph_snap" c izef">dout(dout( 881118         dout(dout( 88211i2 883118 stru/ceph/dir.c#L870" id="L871184class="11ine" name="L884"> 884118  * rmdir and href="fs/ceph/dir.c#L829" id="L821185class="11ine" name="L885"> 885118 retu"comment"> */
 886118ef="f"comment"> */
 887118f="fs"comment"> */
 88811i     a href="+code=drop_caps_fo>(d_name.<_requsird_deletefilef="+code=dentry" clasfilef">d_deletefilef="+, de=err" class="loff_ef">dout(dout(dout(r_dentry_unlendhrefh/ceph/dir.c#L836" id="L831189class="11ine" name="L889"> 889118                 d_name. 89011in 8911191if (inode *inode *d_deletefilef="+="+code=d_inode" clafupathf">dentry-&fupathhrefode=head" class=s="sref">dentry->d_inode;
 892119             ef="+code=inode" classnfo = <"sref">ceph_inode_info = <"sref="+code=dentry" clasref">ci->ceph_get_dentry_p href="+code=old_dentry" ="sref">inode * 893119 r_dentry_unllist_headf="+code=dentry" clasheadf">r_dentry_unlheadf="+c=r="+code=ci" class="sref">ci->r_dentry_unli_unsafeusiropsf="fs/ceph/dir.c#L869" id="L861194class="11ine" name="L894"> 894119 d_name.<_requclasrequesd_name.rts="11ine" name="Lss/ceph/d="fs/ceph/dir.c#L869" id="L861195class="11ine" name="L796"> 7961019        d_name. 7971017     ceph/dir.c#L869" id="L861177class="11ine" name="L798"> 7981019dout("rename dir &i_r,
inode * 7991019d_name.d_deletefilefmap_write_and_ait _rangf"+code=old_dentry" ="sref">inode *dout(r_dentry_unlendhrefh+/ceph/dir.c#L828" id="L82112 class="112 cl name="L799"> 799112 if (d_name. 8911120        d_name. 892112             ee=ceph_mdsc_domiutexa hr,">dout(inode * 8931120stru/ceph/dir.c#L870" id="L871124class="112ne" name="L894"> 8941120dout(ci->dout(dentry-&gist_hemptf"+code=old_dentry" =eadf">r_dentry_unlheadf="+cs/ceph/dir.c#L842" id="L841126class="112ne" name="L796"> 7961120        dout( 7971120     ceph/dir.c#L869" id="L861128class="112ne" name="L798"> 7981120d_name.dentry-&gist_hesref"+code=old_dentry" =eadf">r_dentry_unlheadf="+c"+code=d_inode" clapriev">r_dentry_unlppievrefh/ceph/dir.c#L836" id="L831129class="112ne" name="L799"> 7991120                d_name.<_requclasrequesd_name. 8101121rts="11ine" name="Lss/ceph/d="fscode=ceph_mdsc_dofeqf">d_name. 8111121="fs/ceph/dir.c#L783" id="L781022class="112ne" name="L812"> 8121121            edos/ceph/dir.c#L854" id="L851123class="112ne" name="L813"> 8131121        return -d_name.<_requclasc_getrequesd_name. 8141121dout(ci->dout( 8151121="fs/ceph/dir.c#L783" id="L781126class="112ne" name="L816"> 8161121        dout("rename dir & _r,  8171121             inode *d_name.rts="11ine" name="Lss/ceph/d="fs+/ceph/dir.c#L828" id="L821125class="112ne" name="L818"> 8181121        return d_name.dout( 819112                 d_name.dout( 8201122        d_name.dout(d_name.dout( 8211122        d_name. 8221122               strucref="+cod_name. 823112         return -d_name. 8241122d_name.dentry)
=FIO="fs/=dcomment">/* rmdir .snap/"s=med ref*href="fs/ceph/dir.c#L842" id="L841125class="112ne" name="L825"> 8251122        goto  8261122        dout(d_name.dout( 8271122              8281122        d_name.<_requclasc_a>(cequesd_name. 829112  8301123        dout(ci->dout( 8311123        d_name.dentry-&gist_hemptf"+code=old_dentry" =eadf">r_dentry_unlheadf="+cs/ceph/dir.c#L842" id="L841122class="112ne" name="L832"> 8321123               strucref="+co 8331123        return -d_name.dentry-&gist_hesref"+code=old_dentry" =eadf">r_dentry_unlheadf="+c"+code=d_inode" clapnex"">d_name. 8341123d_name.<_requclasrequesd_name. 8351123        goto } whileode=ceph_snap" clf=f">d_name.rts="11ine" name="Lss/ceph/d="fs+/ceph/dir.c#L828" id="L821126class="112ne" name="L836"> 836112ef="f"c=dout" class="ref">dout( 8371123dout(ci->dout( 8381123dout(inode * 8391123 840112 if (d_name. 8411124    s/ceph/dir.c#L870" id="L871122class="112ne" name="L842"> 8421124="fs/ceph/dir.c#L783" id="L781123class="112ne" name="L843"> 8431124ass="comment"> */
< href="fs/ceph/dir.c#L829" id="L821124class="112ne" name="L844"> 8441124 * rmdir and unrWe maintain a rivate_p to difLRUf=f="fs/ceph/dir.c#L842" id="L841125class="112ne" name="L845"> 8451124retu"comment"> */
 8461124f="f"comment"> */
 8471124="fs"comment"> */
 848112f="fs/oidode=d_drop" clas_requi_;dentry *len,
 8491124="fss/ceph/dir.c#L854" id="L85112 class="112ne" name="L850"> 8501125if (ceph_inode_infoci->dentry-&_requi="sre="+code=req" class="s=f">len,
 8511125if (d_name.<_requslasrlie(dout( 8521125="fs/ceph/dir.c#L783" id="L781123class="112ne" name="L853"> 853112         reture=dout" class=ssref">dout("rename dir & _;,
ci->len,
 854112 len,
len,
len,
len,
len,
len,
 8551125struct dout(d_name.<_requsb_to_clie(<="+code=old_dir" cla==f">len,
r_dentry_unlidsbf="fsh"+code=d_inode" claslasc">dout( 8561125dout(dout(dout( 8571125len,
ci->len,
dout(dout( 8581125dout(dentry-&_numi="sref="fc++/ceph/dir.c#L828" id="L821121class="112ne" name="L859"> 8591125dout(dout(dout( 860112n     /ceph/dir.c#L870" id="L871121class="112ne" name="L861"> 8611126="fs/ceph/dir.c#L783" id="L781022class="112ne" name="L862"> 862112      oidode=d_drop" clas_requi_;dentry-&frequi_;dentry *len,
 863112      /ceph/dir.c#L854" id="L851124class="112ne" name="L864"> 864112 ceph_inode_infoci->dentry-&_requi="sre="+code=req" class="s=f">len,
 865112         goto f="+code=ceph_mds_req=requclasrlie(d_name.<_requslasrlie(dout( 8661126="fs/ceph/dir.c#L879" id="L871127class="112ne" name="L867"> 8671126dout("rename dir & _;, ci->len,
 868112         return len,
len,
len,
len,
len,
len,
ci->dout( 8691126dout(d_name.<_requsb_to_clie(<="+code=old_dir" cla==f">len,
r_dentry_unlidsbf="fsh"+code=d_inode" claslasc">dout( 8701127dout(dout(dout( 8711127len,
ci->len,
dout(dout( 8721127            ee=ceph_mdsc_domspnaaun hr,">dout(dout(dout( 8731127ass=s/ceph/dir.c#L870" id="L871124class="112ne" name="L874"> 8741127nt  875112      oidode=d_drop" clas_requi_;len,
dentry *len,
 876112  877112 ceph_inode_infoci->dentry-&_requi="sre="+code=req" class="s=f">len,
 878112 d_name.<_requslasrlie(dout( 8791127 8801128dout("rename dir & _;,
ci->len,
 8811128        len,
len,
len,
len,
len,
len,
 8821128            ee=ceph_mdsc_domiasc">dout(d_name.<_requsb_to_clie(<="+code=old_dir" cla==f">len,
r_dentry_unlidsbf="fsh"+code=d_inode" claslasc">dout( 8831128        reture=dout" class=sipnaa hr,">dout(dout(dout( 8841128dout(ci->len,
 8851128struct dout(dentry-&_numi="sref="fc--/ceph/dir.c#L828" id="L821124class="112ne" name="L886"> 8861128dout(dout(dout( 887112f="fs"/ceph/dir.c#L870" id="L871128class="112ne" name="L888"> 8881128="fs/ceph/dir.c#L879" id="L871129class="112ne" name="L889"> 889112      comment"> */
< href="fs/ceph/dir.c#L829" id="L82112 class="112ne" name="L890"> 890112n */
 8911121if ( */
(<;iirectoryr; 892112      comment"> */
 893112 ceph_inode_infoinode *dir, str_delass=,"f="+code=ceph_mds_req=="sref">dentry *len,
 894112  = <"sref">ceph_inode_info = <"sref="+code=dentry" clasrdef">ci->ceph_get_dentry_p href="+code=old_dentry" =def">dir, str_delass=//ceph/dir.c#L828" id="L821125class="112ne" name="L796"> 7961029="fs/ceph/dir.c#L879" id="L871127class="102ne" name="L797"> 7971029ci->dout(ceph_inode_indluiro_hashass=/ 7981029/* rmdir .snap/"or mbackward_/sppaf*href="fs/ceph/dir.c#L842" id="L841123class="112ne" name="L799"> 7991029ceph_inode_inCEPH_STR_HASH_LINUXa hr:ceph/dir.c#L828" id="L82113 class="113 cl name="L799"> 7991130        len,
len,
ceph_inode_inhashass=/ceph/dir.c#L828" id="L821131class="113ne" name="L891"> 8911130="fs/ceph/dir.c#L783" id="L78103 2lass="113ne" name="L892"> 892113             edefault:ceph/dir.c#L828" id="L82113 3lass="113ne" name="L893"> 8931130        return -ceph_inode_inrequsbto_hash"+code=old_dentry" =def">ci->dout(ceph_inode_indluiro_hashass=/ceph/dir.c#L836" id="L831134class="113ne" name="L894"> 8941130len,
len,
len,
len,
len,
len,
 7961130     /ceph/dir.c#L870" id="L8711367lass="113ne" name="L797"> 7971130     ceph/dir.c#L869" id="L861138class="113ne" name="L798"> 7981130len,
r_dentry_unliest"ftr 7991130             de=head" class=sradf">r_dentry_unlhradf="+c=r=e=ceph_mds_request"fradf_def">dir, str_est"fradf_defass=/ceph/dir.c#L836" id="L83113 class="113ne" name="L810"> 8101131dir, str_radfdef="+c=r=e=ceph_mds_request"fradfdef">dir, str_est"fradfdefass=/ceph/dir.c#L836" id="L83113 class="113ne" name="L811"> 81111311a href="+codde=head" class=sllsee,">dout(dout( 8121131            ede=head" class=sperf">len,
len,
 8131131        returde=head" class=sralease">dir, str_ralease="+c=r=e=ceph_mds_request"fralease">dir, str_est"fraleaseass=/ceph/dir.c#L836" id="L83113 class="113ne" name="L814"> 8141131len,
len,
 81511315a href="+co de=head" class=ssyncf">d_name.<_sync="+cocode=ceph_mdsc_do_requi=ro_syncf">d_name.<_requsir 8161131     }/ceph/dir.c#L828" id="L821137class="113ne" name="L817"> 8171131     ceph/dir.c#L869" id="L861135class="113ne" name="L818"> 8181131 = <"perationso">len,
 = <"perationsof (r_dentry_unliest"ftr 8191131             de=head" class=slookup">dout(dout( 8201132dout(dout( 82111321a href="+codde=head" class=sgetattf">dir, str_getattf"+cocode=ceph_mdsc_do_requigetattf">dir, str_requigetattf"+co/ceph/dir.c#L836" id="L83113 2lass="113ne" name="L822"> 8221132            ede=head" class=ssetattf">dir, str_setattf"+cocode=ceph_mdsc_do_requisetattf">dir, str_requisetattf"+co/ceph/dir.c#L836" id="L83113 3lass="113ne" name="L823"> 8231132        returde=head" class=ssetxattf">dir, str_setxattf"+cocode=ceph_mdsc_do_requisetxattf">dir, str_requisetxattf"+co/ceph/dir.c#L836" id="L83113 class="113ne" name="L824"> 8241132dir, str_getxattf"+cocode=ceph_mdsc_do_requigetxattf">dir, str_requigetxattf"+co/ceph/dir.c#L836" id="L83113 5lass="113ne" name="L825"> 82511325a href="+co de=head" class=sest_xattf">dir, str_est_xattf"+cocode=ceph_mdsc_do_requilst_xattf">dir, str_requilst_xattf"+co/ceph/dir.c#L836" id="L83113 class="113ne" name="L826"> 8261132        dir, str_ramovexattf="+c=r=e=ceph_mds_request"framovexattf">dir, str_est"framovexattf"+co/ceph/dir.c#L836" id="L83113 class="113ne" name="L827"> 8271132             de=head" class=smk = ">dout( 8281132        dout(dout( 8291132             de=head" class=smkdef">dir, str_mkdef="+c=r=e=ceph_mds_request"fmkdef">dir, str_est"fmkdef="+c/ceph/dir.c#L836" id="L83113 class="113ne" name="L830"> 8301133dout(dout( 83111331a href="+codde=head" class=sun 28,">dout(dout( 8321133            ede=head" class=srmdef">dir, str_rmdef="+c=r=e=ceph_mds_request"fun 28,">dout( 8331133        returde=head" class=sra854<">len,
len,
 8341133len,
len,
 83511335a href="+co de=head" class=satomiciperf">len,
len,
 8361133     }/ceph/dir.c#L828" id="L821136class="113ne" name="L837"> 8371133     ceph/dir.c#L869" id="L861138class="113ne" name="L838"> 8381133len,
r_dentry_unliest"ft; 8391133             de=head" class=sdfravalidat<">len,
len,
 8401134dir, str_d_ralease="+c=r=e=ceph_mds_request"fdfralease">dir, str_est"fdfralease"+co/ceph/dir.c#L836" id="L83113 class="113ne" name="L841"> 84111341a href="+codde=head" class=sd_prune">dir, str_d_prune="+c=r=e=ceph_mds_request"fdfprune">dir, str_est"fdfprune"+co/ceph/dir.c#L836" id="L83113 2lass="113ne" name="L842"> 8421134="fs/}/ceph/dir.c#L828" id="L821133class="113ne" name="L843"> 8431134stru/ceph/dir.c#L870" id="L871134class="113ne" name="L844"> 8441134len,
r_dentry_unliest"fsnaptr 84511345a href="+co de=head" class=sdfravalidat<">len,
len,
 8461134        dir, str_d_ralease="+c=r=e=ceph_mds_request"fdfralease">dir, str_est"fdfralease"+co/ceph/dir.c#L836" id="L83113 class="113ne" name="L847"> 8471134="fs"}/ceph/dir.c#L828" id="L821133class="113ne" name="L848"> 8481134="fs/ceph/dir.c#L879" id="L871139class="113ne" name="L849"> 8491134="fssonstu"f="+code=inode" classft;len,
r_dentry_unliest"fsnapft; 8501135dir, str_d_ralease="+c=r=e=ceph_mds_request"fdfralease">dir, str_est"fdfralease"+co/ceph/dir.c#L836" id="L831131class="113ne" name="L851"> 85111351a href="+codde=head" class=sd_prune">dir, str_d_prune="+c=r=e=ceph_mds_request"fdfprune">dir, str_est"fdfprune"+co/ceph/dir.c#L836" id="L831132class="113ne" name="L852"> 8521135="fs/}/ceph/dir.c#L828" id="L821133class="113ne" name="L853"> 853113      
The original LXR software byothe eph/dir.chttp://sourceforge.net/projects/lxr">LXR mdirunitf"+co, ths nexerair .sal version byoeph/dir.cmailto:lxr@853ux.nopm8xr@853ux.no="fsd
8xr.853ux.no kindly hosed;pbyoeph/dir.chttp://www.redpill-853pro.nopmRedpill L53pro AS"+co, provider of L53ux onstulting andoperationsotserviceotsince 1995.