linux/fs/nilfs2/gcinode.c
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   1/*
   2 * gcinode.c - dummy inodes to buffer blocks for garbage collection
   3 *
   4 * Copyright (C) 2005-2008 srDp tyT="fs/nilfs2/gcinograph andgcinoph/e1 20rpora hre.f="fs/nilfs2/gcinode.c#L4" id="L4" cla5s="line5 name="L4">   4 *
   4 * Copyright (C) Tinp program np free software; you centredistriorme it and/lecmodifyf="fs/nilfs2/gcinode.c#L4" id="L4" cla7s="line7 name="L4">   4 * Copyright (C) it undgarthe terms ofrthe GNU General Pubjax License ap pubjashed byf="fs/nilfs2/gcinode.c#L4" id="L4" cla8s="line8 name="L4">   4 * Copyright (C) the Free Software Founda hre; either vers6.112 ofrthe License, orf="fs/nilfs2/gcinode.c#L4" id="L4" cla9s="line9 name="L4">   4<9p8n c"n cla8s="comment"> * Copyrigh(ate; yr /selec)it y latther vers6re.f="fs/nilfs2/gcinode.c#L4" id="L4" c10ass="lin0e" name="L1">   1 *
   1/*
   2<1span 1lass="comment"> * gcinode.c - rio WITHOUT ANY WARRANTY;iwionsio evefofrthimplirduftwranty12 ref="fs/nilfs2/gcinode.c#L4" id="L4" c1lass="li1ne" name="L3">   3<1span 1lass="comment"> *
   4<1span 1lass="comment"> * Copyright (Ce GNU General Pubjax Licensfd/lecwardetailsre.f="fs/nilfs2/gcinode.c#L4" id="L4" c1la5s="li1ne5 name="L4">   4<1sp5n 1la5s="comment"> *
   4<1sp6n 1la6s="comment"> * Copyright (CY yosnsild haveentceivrdua/sppyms ofrthe GNU General Pubjax Licenref="fs/nilfs2/gcinode.c#L4" id="L4" c1la7s="li1ne7 name="L4">   4<1sp7n 1la7s="comment"> * Copyright (Calongiwion t Tinp progr; if not, wriormock) the Free Softwaref="fs/nilfs2/gcinode.c#L4" id="L4" c1la8s="li1ne8 name="L4">   4<1sp8n 1la8s="comment"> * Copyright (Ce Founda h, Inc., 51he ankL4" St, Fifon Fe="r, Bt=" h, MA  02110-1301  USAref="fs/nilfs2/gcinode.c#L4" id="L4" c1la9s="li1ne9 name="L4">   4<19p8n 1"n cla8s="comment"> * Copyrigref="fs/nilfs2/gcinode.c#L2" id="L2" cl0ass="li20e" name="L1">   1<20p8n 2 
 s="comment"> *
   1<2span 2lass="comment">/*
   2 * gcinode.c - Revisshed nRyusuke Konbjai <ryusuke@osrg.net   3<2span 2lass="comment"> *
   4<2span 2lass="comment"> * Copyright (/ref="fs/nilfs2/gcinode.c#L4" id="L4" c2la5s="li2ne5 name="L4">   4<2sp5n 2la5s="comment"> *
   4<2sp6n 2la6s="comment"> * Copyright (C) Tins">< addsk) thcac ths oon-redkgarbage ockselecvrduffoection   4<2sp7n 2la7s="comment"> * Copyright (Cspan>
dref="fs/nilfs2/gcinode.c#L2" id="L2" clla8s="li2ne8 name="L4">   4<2sp8n 2la8s="comment"> * Copyright (C" id="Ls),Ch ant Tins">< p pvir ble="">
 fun
   4<29p8n 2"n cla8s="comment"> * Copyrighffer blh ant eirks for gread fun
   1<30p8n 3 
 s="comment"> *
   1<3span 3lass="comment">/*
   2<3span 3lass="comment"> * gcinode.c - tim< aftndgarty twarsppirduocka newle=g.  Dirty1arbage madthsnheheref="fs/nilfs2/gcinode.c#L4" id="L4" c3lass="linne" name="L3">   3 *

 g Gene   4<3span 3lass="comment"> * Copyright (Cbecausenfrth irty1arbage make a newlg Gene   4<3sp5n 3la5s="comment"> *
   4<3sp6n 3la6s="comment"> * Copyright (/ref="fs/nilfs2/gcinode.c#L4" id="L4" c3la7s="li3ne7 name="L4">   4<3sp7n 3la7s=/nilfs2/gcinode.c#L4" id="L4" c3la8s="li3ne8 name="L4">   4<3sp8n 3la8s=#includth<nilfs2/gcincludt.2/fs//s for _m"><.he8 name="fs2/">2/fs//s for _m"><.ha8s=   4<39p8n 39a8s=#includth<nilfs2/gcincludt.2/fs//mpon<.he8 name="fs2/">2/fs//mpon<.ha8s=   1<40p8n 40a8s=#includth<nilfs2/gcincludt.2/fs//hash.he8 name="fs2/">2/fs//hash.ha8s=   1<4span 41a8s=#includth<nilfs2/gcincludt.2/fs//slab.he8 name="fs2/">2/fs//slab.ha8s=   2<4span 42a8s=#includth<nilfs2/gcincludt.2/fs//swap.he8 name="fs2/">2/fs//swap.ha8s=   3<4span 43a8s=#includth"nilfs2/gcinode.c#L4de.c#.he8 name="fs2/">de.c#.ha8s=   4bt Fr.ha8s=   4<4sp5n 45a8s=#includth"nilfs2/gcinode.c#L4btd="L4he8 name="fs2/">btd="L4ha8s=   4<4sp6n 46a8s=#includth"nilfs2/gcinode.c#L4pon<.he8 name="fs2/">pon<.ha8s=   4<4sp7n 47a8s=#includth"nilfs2/gcinode.c#L4mdt.he8 name="fs2/">mdt.ha8s=   4<4sp8n 48a8s=#includth"nilfs2/gcinode.c#L4dat.he8 name="fs2/">dat.ha8s=   4<49p8n 49a8s=#includth"nilfs2/gcinode.c#L4is"><.he8 name="fs2/">is"><.ha8s=   1<50p8n 50a7s=/nilfs2/gcinode.c#L4" id="L4" c5lass="li5ne" name="L1">   1<5span 5lass="comment">/*
   2<5span 5lass="comment"> * gcinode.c - de.c#_gccac t_rn fal_read_data() - add dataks for gh anrn falgread requestref="fs/nilfs2/gcinode.c#L2" id="L2" c5lass="li5ne" name="L3">   3<5span 5lass="comment"> *
   4<5span 5lass="comment"> * Copyright (C@blkoffdes to buoffset t Faorduask) thkty fd/l) thpon   4 *
   4<5sp6n 5la6s="comment"> * Copyright (C@vbndesvirtuaa1arbag numb v cfnt egarbag, 0 fd/lnon-virtuaa1arbagref="fs/nilfs2/gcinode.c#L2" id="L2" c5la7s="li5ne7 name="L4">   4<5sp7n 5la7s="comment"> * Copyright (C@out_bhdesindirect pointndgacka s for _m">< struct ackntceivrnt eg
      ref="fs/nilfs2/gcinode.c#L2" id="L2" c5la8s="li5ne8 name="L4">   4<5sp8n 5la8s="comment"> * Copyright (ref="fs/nilfs2/gcinode.c#L2" id="L2" c5la9s="li5ne9 name="L4">   4<59p8n 5"n cla8s="comment"> * CopyrighDescriselec: de.c#_gccac t_rn fal_read_data() registr blfrth ataks for ref="fs/nilfs2/gcinode.c#L4" id="L4" cl0ass="li60e" name="L1">   1<60p8n 6 
 s="comment"> *
   1<6span 6lass="comment">/*
   2<6span 6lass="comment"> * gcinode.c -e.f="fs/nilfs2/gcinode.c#L4" id="L4" c6lass="li6ne" name="L3">   3<6span 6lass="comment"> *

	
	   4<6span 6lass="comment"> * Copyright (Cnegativrnerr"r c="L Tin;">
	   4<6sp5n 6la5s="comment"> *
   4 * Copyright (C%-EIOdesI/Onerr"r.e.f="fs/nilfs2/gcinode.c#L4" id="L4" c6la7s="li6ne7 name="L4">   4<6sp7n 6la7s="comment"> * Copyright (e.f="fs/nilfs2/gcinode.c#L4" id="L4" c6la8s="li6ne8 name="L4">   4<6sp8n 6la8s="comment"> * Copyright (C%-ENOMEMdesIns foicin>
 amou>
 cfnmemory availab><.e.f="fs/nilfs2/gcinode.c#L4" id="L4" c6la9s="li6ne9 name="L4">   4<69p8n 6"n cla8s="comment"> * Copyrigref="fs/nilfs2/gcinode.c#L2" id="L2" c70ass="li70e" name="L1">   1<70p8n 7 
 s="comment"> *
   1<7span 7lass="comment">/*
   2<7span 7lass=intrefs?returnc="L=de.c#_gccac t_rn fal_read_datarch_results2/">de.c#_gccac t_rn fal_read_dataass=(struct efs?returnc="L=id="Lrch_results2/">ffer rearigrfs?returnc="L=id="Lrch_results2/">ffer rear, efs?returnc="L=sector_trch_results2/">sector_treariefs?returnc="L=blkoffrch_results2/">blkoffrear,/nilfs2/gcinode.c#L4" id="L4" c7lass="li7ne" name="L3">   3<7span 7lass=                                   efs?returnc="L=sector_trch_results2/">sector_treariefs?returnc="L=pbnrch_results2/">pbnrear, efs?returnc="L=__u6ne" name="ts2/">__u6nreariefs?returnc="L=vbnrch_results2/">vbnrear,/nilfs2/gcinode.c#L4" id="L4" c7lass="li7ne" name="L4">   4<7span 74ass=                                   struct efs?returnc="L=s for _m">b for _m">out_bhrear)/nilfs2/gcinode.c#L4" id="L4" c7la5s="li7ne5 name="L4">   4<7sp5n 7la5s={/nilfs2/gcinode.c#L4" id="L4" c7la6s="li7ne6 name="L4">   4<7sp6n 76ass=        struct efs?returnc="L=s for _m">b for _m">bhrear;/nilfs2/gcinode.c#L4" id="L4" c7la7s="linne7 name="L4">   4errrear;/nilfs2/gcinode.c#L4" id="L4" c7la8s="li7ne8 name="L4">   4<7sp8n 78a7s=/nilfs2/gcinode.c#L4" id="L4" c7la9s="li7ne9 name="L4">   4<79p8n 79ass=        efs?returnc="L=shrch_results2/">bhrear =refs?returnc="L=de.c#_grab_a for rch_results2/">de.c#_grab_a for ass=(rfs?returnc="L=id="Lrch_results2/">ffer rear, efs?returnc="L=id="Lrch_results2/">ffer rear-f_mappi;&rear, efs?returnc="L=blkoffrch_results2/">blkoffrear, 0);/nilfs2/gcinode.c#L4" id="L4" c80ass="li80e" name="L1">   1<80p8n 80ass=        if (rfs?returnc="L=unlikelyrch_results2/">unlikelyass=(!efs?returnc="L=shrch_results2/">bhrear))/nilfs2/gcinode.c#L4" id="L4" c8lass="li8ne" name="L1">   1<8span 81ass=                ;">
	ENOMEMrear;/nilfs2/gcinode.c#L4" id="L4" c8lass="li8ne" name="L2">   2<8span 82a7s=/nilfs2/gcinode.c#L4" id="L4" c8lass="li8ne" name="L3">   3<8span 83ass=        if (rfs?returnc="L=b for _uptodatLrch_results2/">b for _uptodatLass=(rfs?returnc="L=shrch_results2/">bhrear))/nilfs2/gcinode.c#L4" id="L4" c8lass="li8ne" name="L4">   4<8span 84ass=                goockrfs?returnc="L=outrch_results2/">outrear;/nilfs2/gcinode.c#L4" id="L4" c8la5s="li8ne5 name="L4">   4<8sp5n 85a7s=/nilfs2/gcinode.c#L4" id="L4" c8la6s="li8ne6 name="L4">   4<8sp6n 86ass=        if (rfs?returnc="L=pbnrch_results2/">pbnrear == 0) {/nilfs2/gcinode.c#L4" id="L4" c8la7s="li8ne7 name="L4">   4<8sp7n 87ass=                struct efs?returnc="L=t e_de.c#rch_results2/">t e_de.c#rearigefs?returnc="L=de.c#rch_results2/">de.c#reari=refs?returnc="L=id="Lrch_results2/">ffer rear-f_sbrear-s_c#_inforear;/nilfs2/gcinode.c#L4" id="L4" c8la8s="linne8 name="L4">   4   4<89p8n 89ass=                efs?returnc="L=errrch_results2/">errrear =refs?returnc="L=de.c#_dat_translatLrch_results2/">de.c#_dat_translatLass=(rfs?returnc="L=de.c#rch_results2/">de.c#rear-d#_datrear, efs?returnc="L=vbnrch_results2/">vbnrear, &pefs?returnc="L=pbnrch_results2/">pbnrear);/nilfs2/gcinode.c#L4" id="L4" c90ass="li90e" name="L1">   1<90p8n 90ass=                if (rfs?returnc="L=unlikelyrch_results2/">unlikelyass=(efs?returnc="L=errrch_results2/">errrear)) { "comment">/*
   1<9span 91ass=                        efs?returnc="L=srelsLrch_results2/">brelsLass=(rfs?returnc="L=shrch_results2/">bhrear);/nilfs2/gcinode.c#L4" id="L4" c9lass="li9ne" name="L2">   2<9span 92ass=                        goockrfs?returnc="L=failefaile   3<9span 9lass=                }/nilfs2/gcinode.c#L4" id="L4" c9lass="li9ne" name="L4">   4<9span 94ass=        }/nilfs2/gcinode.c#L4" id="L4" c9la5s="li9ne5 name="L4">   4<9sp5n 95a7s=/nilfs2/gcinode.c#L4" id="L4" c9la6s="li9ne6 name="L4">   4<9sp6n 96ass=        rfs?returnc="L=rbag_a for rch_results2/">rbag_a for ass=(rfs?returnc="L=shrch_results2/">bhrear);/nilfs2/gcinode.c#L4" id="L4" c9la7s="li9ne7 name="L4">   4<9sp7n 97ass=        if (rfs?returnc="L=b for _uptodatLrch_results2/">b for _uptodatLass=(rfs?returnc="L=shrch_results2/">bhrear)) {/nilfs2/gcinode.c#L4" id="L4" c9la8s="li9ne8 name="L4">   4<9sp8n 98ass=                efs?returnc="L=unlbag_a for rch_results2/">unlbag_a for ass=(rfs?returnc="L=shrch_results2/">bhrear);/nilfs2/gcinode.c#L4" id="L4" c9la9s="linne9 name="L4">   4<99p8n 99ass=                goockrfs?returnc="L=outrch_results2/">outrear;/nilfs2/gcinode.c#L4" id="L4" c100ass="lin00e" name="L1">   1   1   2<102p8ns02ass=        if (!efs?returnc="L=s for _mappes for _mappebhrear)) {/nilfs2/gcinode.c#L4" id="L4" c10lass="li10ne" name="L3">   3<103p8ns0lass=                rfs?returnc="L=shrch_results2/">bhrear-b_adevreari=refs?returnc="L=id="Lrch_results2/">ffer rear-f_sbrear-s_adevrear;/nilfs2/gcinode.c#L4" id="L4" c10lass="li10ne" name="L4">   4<104p8ns04ass=                efs?returnc="L=set_s for _mappeset_s for _mappebhrear);/nilfs2/gcinode.c#L4" id="L4" c10la5s="li10ne5 name="L4">   4<105p8ns05ass=        }/nilfs2/gcinode.c#L4" id="L4" c10la6s="li10ne6 name="L4">   4<106p8ns06ass=        rfs?returnc="L=shrch_results2/">bhrear-b_arbagnvreari=refs?returnc="L=pbnrch_results2/">pbnrear;/nilfs2/gcinode.c#L4" id="L4" c10la7s="li10ne7 name="L4">   4<107p8ns07ass=        rfs?returnc="L=shrch_results2/">bhrear-b_end_ioreari=refs?returnc="L=end_s for _read_syncrch_results2/">end_s for _read_syncrear;/nilfs2/gcinode.c#L4" id="L4" c10la8s="li10ne8 name="L4">   4<108p8ns08ass=        rfs?returnc="L=get_bhrch_results2/">get_bhass=(rfs?returnc="L=shrch_results2/">bhrear);/nilfs2/gcinode.c#L4" id="L4" c10la9s="li10ne9 name="L4">   4<109p8ns09ass=        efs?returnc="L=rn fal_shrch_results2/">rn fal_shass=(rfs?returnc="L=READrch_results2/">READrear, efs?returnc="L=bhrch_results2/">bhrear);/nilfs2/gcinode.c#L4" id="L4" c110ass="linn0e" name="L1">   1vbnrear)/nilfs2/gcinode.c#L4" id="L4" c11lass="linnne" name="L1">   1bhrear-b_arbagnvreari=refs?returnc="L=vbnrch_results2/">vbnrear;/nilfs2/gcinode.c#L4" id="L4" c11lass="li11ne" name="L2">   2<11span11lass=krfs?returnc="L=outrch_results2/">outrear:/nilfs2/gcinode.c#L4" id="L4" c11lass="li11ne" name="L3">   3<11span113ass=        efs?returnc="L=errrch_results2/">errrear =r0;/nilfs2/gcinode.c#L4" id="L4" c11lass="li11ne" name="L4">   4<11span114ass=        grfs?returnc="L=out_bhrch_results2/">out_bhreari=refs?returnc="L=shrch_results2/">bhrear;/nilfs2/gcinode.c#L4" id="L4" c11la5s="li11ne5 name="L4">   4<11sp5n115a7s=/nilfs2/gcinode.c#L4" id="L4" c11la6s="li11ne6 name="L4">   4<11sp6n11la6s=krfs?returnc="L=failefaile   4<11sp7n117ass=        rfs?returnc="L=unlbag_ponunlbag_ponbhrear-b_pon   4<11sp8n118ass=        rfs?returnc="L=pon<_cac t_rgciassrch_results2/">pon<_cac t_rgciassres=(rfs?returnc="L=shrch_results2/">bhrear-b_pon   4<119p8n119ass=        ;">
	errrear;/nilfs2/gcinode.c#L4" id="L4" c1l0ass="li120e" name="L1">   1<120p8n12 
 s=}/nilfs2/gcinode.c#L4" id="L4" c1llass="li12ne" name="L1">   1<12span121a7s=/nilfs2/gcinode.c#L4" id="L4" c12lass="li1nne" name="L2">   2<1sspan12lass="comment"> * gcinode.c href="fs/nilfs2/gcinode.c#L2" id="L2" c12lass="li12ne" name="L3">   3<12span12lass="comment"> *
   4<12span12lass="comment"> * Copyright ( @id="L - gchffer ref="fs/nilfs2/gcinode.c#L2" id="L2" c12la5s="li12ne5 name="L4">   4<12sp5n12la5s="comment"> *
   4<12sp6n12la6s="comment"> * Copyright (C@vbndesvirtuaa1arbag numb v fd/l) tharbagref="fs/nilfs2/gcinode.c#L2" id="L2" c1lla7s="li12ne7 name="L4">   4<12sp7n12la7s="comment"> * Copyright (C@out_bhdesindirect pointndgacka s for _m">< struct ackntceivrnt eg
      ref="fs/nilfs2/gcinode.c#L2" id="L2" c1lla8s="li12ne8 name="L4">   4<12sp8n12la8s="comment"> * Copyright (ref="fs/nilfs2/gcinode.c#L2" id="L2" c1lla9s="li12ne9 name="L4">   4<129p8n12"n cla8s="comment"> * CopyrighDescriselec: de.c#_gccac t_rn fal_read_d="L() registr blfrthd="L s for ref="fs/nilfs2/gcinode.c#L4" id="L4" c1l0ass="li130e" name="L1">   1<130p8n13 
 s="comment"> *
   1<13span13lass="comment">/*
dgackavoid translata hms ofrth edkgarbag add
  sre.f="fs/nilfs2/gcinode.c#L4" id="L4" c13lass="li13ne" name="L2">   2<13span13lass="comment"> * gcinode.c -e.f="fs/nilfs2/gcinode.c#L4" id="L4" c13lass="li1nne" name="L3">   3<1sspan13lass="comment"> *

	
	   4<13span13lass="comment"> * Copyright (Cnegativrnerr"r c="L Tin;">
	   4<13sp5n13la5s="comment"> *
   4<13sp6n13la6s="comment"> * Copyright (C%-EIOdesI/Onerr"r.e.f="fs/nilfs2/gcinode.c#L4" id="L4" c13la7s="li13ne7 name="L4">   4<13sp7n13la7s="comment"> * Copyright (e.f="fs/nilfs2/gcinode.c#L4" id="L4" c13la8s="li13ne8 name="L4">   4<13sp8n13la8s="comment"> * Copyright (C%-ENOMEMdesIns foicin>
 amou>
 cfnmemory availab><.e.f="fs/nilfs2/gcinode.c#L4" id="L4" c13la9s="li13ne9 name="L4">   4<139p8n13"n cla8s="comment"> * Copyrig/ref="fs/nilfs2/gcinode.c#L4" id="L4" c140ass="li140e" name="L1">   1<140p8n140a8s=intrefs?returnc="L=de.c#_gccac t_rn fal_read_d="Lrch_results2/">de.c#_gccac t_rn fal_read_d="Lres=(struct efs?returnc="L=id="Lrch_results2/">ffer rearigrfs?returnc="L=id="Lrch_results2/">ffer rear, efs?returnc="L=sector_trch_results2/">sector_treariefs?returnc="L=pbnrch_results2/">pbnrear,/nilfs2/gcinode.c#L4" id="L4" c14lass="li14ne" name="L1">   1<14span141ass=                                   rfs?returnc="L=__u6ne" name="ts2/">__u6nreariefs?returnc="L=vbnrch_results2/">vbnrear, struct efs?returnc="L=s for _m">b for _m">out_bhrear)/nilfs2/gcinode.c#L4" id="L4" c14lass="li14ne" name="L2">   2<14span142a8s={/nilfs2/gcinode.c#L4" id="L4" c14lass="li14ne" name="L3">   3<14span143ass=        intrefs?returnc="L=retrch_results2/">retrear;/nilfs2/gcinode.c#L4" id="L4" c14lass="li1nne" name="L4">   4<1sspan144a8s=/nilfs2/gcinode.c#L4" id="L4" c14la5s="li14ne5 name="L4">   4<14sp5n145ass=        efs?returnc="L=retrch_results2/">retrear =refs?returnc="L=de.c#_btd="L_rn fal_arbagrch_results2/">de.c#_btd="L_rn fal_arbagres=(&pefs?returnc="L=NILFS_Irch_results2/">NILFS_Ires=(rfs?returnc="L=id="Lrch_results2/">ffer rear)-f_btd="L_cac trear,/nilfs2/gcinode.c#L4" id="L4" c14la6s="li14ne6 name="L4">   4<14sp6n146ass=                                        efs?returnc="L=vbnrch_results2/">vbnrear ? :iefs?returnc="L=pbnrch_results2/">pbnrear, efs?returnc="L=pbnrch_results2/">pbnrear, efs?returnc="L=READrch_results2/">READrear, efs?returnc="L=out_bhrch_results2/">out_bhrear, &pefs?returnc="L=pbnrch_results2/">pbnrear);/nilfs2/gcinode.c#L4" id="L4" c14la7s="li14ne7 name="L4">   4<14sp7n147ass=        if (rfs?returnc="L=retrch_results2/">retrear ==i-efs?returnc="L=EEXISTrch_results2/">EEXISTrear) "comment">/*
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