X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=fs%2Fgfs2%2Ftrans.c;h=4ef0e9fa3549bef52daffcc26a70635a1fd70950;hb=9a1607071c293e48b08bd703733480b1d55c7b93;hp=3fae3d4e9ae4ac96ea787330001bcdd3bd44f46c;hpb=d0dc80dbafb5c10ad2084831a61bbf945484a139;p=safe%2Fjmp%2Flinux-2.6 diff --git a/fs/gfs2/trans.c b/fs/gfs2/trans.c index 3fae3d4..4ef0e9f 100644 --- a/fs/gfs2/trans.c +++ b/fs/gfs2/trans.c @@ -1,10 +1,10 @@ /* * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. - * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved. + * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. * * This copyrighted material is made available to anyone wishing to use, * modify, copy, or redistribute it subject to the terms and conditions - * of the GNU General Public License v.2. + * of the GNU General Public License version 2. */ #include @@ -12,12 +12,10 @@ #include #include #include -#include #include -#include +#include #include "gfs2.h" -#include "lm_interface.h" #include "incore.h" #include "glock.h" #include "log.h" @@ -35,6 +33,9 @@ int gfs2_trans_begin(struct gfs2_sbd *sdp, unsigned int blocks, BUG_ON(current->journal_info); BUG_ON(blocks == 0 && revokes == 0); + if (!test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) + return -EROFS; + tr = kzalloc(sizeof(struct gfs2_trans), GFP_NOFS); if (!tr) return -ENOMEM; @@ -44,25 +45,18 @@ int gfs2_trans_begin(struct gfs2_sbd *sdp, unsigned int blocks, tr->tr_revokes = revokes; tr->tr_reserved = 1; if (blocks) - tr->tr_reserved += 1 + blocks; + tr->tr_reserved += 6 + blocks; if (revokes) tr->tr_reserved += gfs2_struct2blk(sdp, revokes, - sizeof(uint64_t)); + sizeof(u64)); INIT_LIST_HEAD(&tr->tr_list_buf); - gfs2_holder_init(sdp->sd_trans_gl, LM_ST_SHARED, - GL_NEVER_RECURSE, &tr->tr_t_gh); + gfs2_holder_init(sdp->sd_trans_gl, LM_ST_SHARED, 0, &tr->tr_t_gh); error = gfs2_glock_nq(&tr->tr_t_gh); if (error) goto fail_holder_uninit; - if (!test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { - tr->tr_t_gh.gh_flags |= GL_NOCACHE; - error = -EROFS; - goto fail_gunlock; - } - error = gfs2_log_reserve(sdp, tr->tr_reserved); if (error) goto fail_gunlock; @@ -83,21 +77,18 @@ fail_holder_uninit: void gfs2_trans_end(struct gfs2_sbd *sdp) { - struct gfs2_trans *tr; + struct gfs2_trans *tr = current->journal_info; - tr = current->journal_info; + BUG_ON(!tr); current->journal_info = NULL; - if (gfs2_assert_warn(sdp, tr)) - return; - if (!tr->tr_touched) { gfs2_log_release(sdp, tr->tr_reserved); - - gfs2_glock_dq(&tr->tr_t_gh); - gfs2_holder_uninit(&tr->tr_t_gh); - - kfree(tr); + if (tr->tr_t_gh.gh_gl) { + gfs2_glock_dq(&tr->tr_t_gh); + gfs2_holder_uninit(&tr->tr_t_gh); + kfree(tr); + } return; } @@ -106,25 +97,21 @@ void gfs2_trans_end(struct gfs2_sbd *sdp) tr->tr_num_buf, tr->tr_blocks); print_symbol(KERN_WARNING "GFS2: Transaction created at: %s\n", tr->tr_ip); } - if (gfs2_assert_withdraw(sdp, tr->tr_num_revoke <= tr->tr_revokes)) + if (gfs2_assert_withdraw(sdp, tr->tr_num_revoke <= tr->tr_revokes)) { fs_err(sdp, "tr_num_revoke = %u, tr_revokes = %u ", tr->tr_num_revoke, tr->tr_revokes); print_symbol(KERN_WARNING "GFS2: Transaction created at: %s\n", tr->tr_ip); + } gfs2_log_commit(sdp, tr); - - gfs2_glock_dq(&tr->tr_t_gh); - gfs2_holder_uninit(&tr->tr_t_gh); - - kfree(tr); + if (tr->tr_t_gh.gh_gl) { + gfs2_glock_dq(&tr->tr_t_gh); + gfs2_holder_uninit(&tr->tr_t_gh); + kfree(tr); + } if (sdp->sd_vfs->s_flags & MS_SYNCHRONOUS) - gfs2_log_flush(sdp); -} - -void gfs2_trans_add_gl(struct gfs2_glock *gl) -{ - lops_add(gl->gl_sbd, &gl->gl_le); + gfs2_log_flush(sdp, NULL); } /** @@ -150,39 +137,34 @@ void gfs2_trans_add_bh(struct gfs2_glock *gl, struct buffer_head *bh, int meta) lops_add(sdp, &bd->bd_le); } -void gfs2_trans_add_revoke(struct gfs2_sbd *sdp, uint64_t blkno) +void gfs2_trans_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd) { - struct gfs2_revoke *rv = kmalloc(sizeof(struct gfs2_revoke), - GFP_NOFS | __GFP_NOFAIL); - lops_init_le(&rv->rv_le, &gfs2_revoke_lops); - rv->rv_blkno = blkno; - lops_add(sdp, &rv->rv_le); + BUG_ON(!list_empty(&bd->bd_le.le_list)); + BUG_ON(!list_empty(&bd->bd_ail_st_list)); + BUG_ON(!list_empty(&bd->bd_ail_gl_list)); + lops_init_le(&bd->bd_le, &gfs2_revoke_lops); + lops_add(sdp, &bd->bd_le); } -void gfs2_trans_add_unrevoke(struct gfs2_sbd *sdp, uint64_t blkno) +void gfs2_trans_add_unrevoke(struct gfs2_sbd *sdp, u64 blkno, unsigned int len) { - struct gfs2_revoke *rv; - int found = 0; + struct gfs2_bufdata *bd, *tmp; + struct gfs2_trans *tr = current->journal_info; + unsigned int n = len; gfs2_log_lock(sdp); - - list_for_each_entry(rv, &sdp->sd_log_le_revoke, rv_le.le_list) { - if (rv->rv_blkno == blkno) { - list_del(&rv->rv_le.le_list); + list_for_each_entry_safe(bd, tmp, &sdp->sd_log_le_revoke, bd_le.le_list) { + if ((bd->bd_blkno >= blkno) && (bd->bd_blkno < (blkno + len))) { + list_del_init(&bd->bd_le.le_list); gfs2_assert_withdraw(sdp, sdp->sd_log_num_revoke); sdp->sd_log_num_revoke--; - found = 1; - break; + kmem_cache_free(gfs2_bufdata_cachep, bd); + tr->tr_num_revoke_rm++; + if (--n == 0) + break; } } - gfs2_log_unlock(sdp); - - if (found) { - struct gfs2_trans *tr = current->journal_info; - kfree(rv); - tr->tr_num_revoke_rm++; - } } void gfs2_trans_add_rg(struct gfs2_rgrpd *rgd)