From 991deec8193a20cf5a79a4c4bc01ba1a51c9ba5f Mon Sep 17 00:00:00 2001 From: Abhi Das Date: Thu, 17 Apr 2014 00:55:04 -0500 Subject: [PATCH 1/6] GFS2: quotas not being refreshed in gfs2_adjust_quota Old values of user quota limits were being used and could allow users to exceed their allotted quotas. This patch refreshes the limits to the latest values so that quotas are enforced correctly. Resolves: rhbz#1077463 Signed-off-by: Abhi Das Signed-off-by: Steven Whitehouse --- fs/gfs2/quota.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c index c4effff7cf55..619389649d03 100644 --- a/fs/gfs2/quota.c +++ b/fs/gfs2/quota.c @@ -778,6 +778,7 @@ get_a_page: i_size_write(inode, size); inode->i_mtime = inode->i_atime = CURRENT_TIME; mark_inode_dirty(inode); + set_bit(QDF_REFRESH, &qd->qd_flags); return 0; unlock_out: From 5a7c6690c2759d686d2c299402327e92ed92ab6c Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Sat, 26 Apr 2014 20:57:23 +0200 Subject: [PATCH 2/6] GFS2: lops.c: replace 0 by NULL for pointers Sparse warning: fs/gfs2/lops.c:78:29: "warning: Using plain integer as NULL pointer" Cc: Andrew Morton Signed-off-by: Fabian Frederick Signed-off-by: Steven Whitehouse --- fs/gfs2/lops.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c index a294d8d8bcd4..2c1ae861dc94 100644 --- a/fs/gfs2/lops.c +++ b/fs/gfs2/lops.c @@ -75,7 +75,7 @@ static void maybe_release_space(struct gfs2_bufdata *bd) unsigned int index = bd->bd_bh->b_blocknr - gl->gl_name.ln_number; struct gfs2_bitmap *bi = rgd->rd_bits + index; - if (bi->bi_clone == 0) + if (bi->bi_clone == NULL) return; if (sdp->sd_args.ar_discard) gfs2_rgrp_send_discards(sdp, rgd->rd_data0, bd->bd_bh, bi, 1, NULL); From 24972557b12ce8fd5b6c6847d0e2ee1837ddc13b Mon Sep 17 00:00:00 2001 From: Benjamin Marzinski Date: Thu, 1 May 2014 22:26:55 -0500 Subject: [PATCH 3/6] GFS2: remove transaction glock GFS2 has a transaction glock, which must be grabbed for every transaction, whose purpose is to deal with freezing the filesystem. Aside from this involving a large amount of locking, it is very easy to make the current fsfreeze code hang on unfreezing. This patch rewrites how gfs2 handles freezing the filesystem. The transaction glock is removed. In it's place is a freeze glock, which is cached (but not held) in a shared state by every node in the cluster when the filesystem is mounted. This lock only needs to be grabbed on freezing, and actions which need to be safe from freezing, like recovery. When a node wants to freeze the filesystem, it grabs this glock exclusively. When the freeze glock state changes on the nodes (either from shared to unlocked, or shared to exclusive), the filesystem does a special log flush. gfs2_log_flush() does all the work for flushing out the and shutting down the incore log, and then it tries to grab the freeze glock in a shared state again. Since the filesystem is stuck in gfs2_log_flush, no new transaction can start, and nothing can be written to disk. Unfreezing the filesytem simply involes dropping the freeze glock, allowing gfs2_log_flush() to grab and then release the shared lock, so it is cached for next time. However, in order for the unfreezing ioctl to occur, gfs2 needs to get a shared lock on the filesystem root directory inode to check permissions. If that glock has already been grabbed exclusively, fsfreeze will be unable to get the shared lock and unfreeze the filesystem. In order to allow the unfreeze, this patch makes gfs2 grab a shared lock on the filesystem root directory during the freeze, and hold it until it unfreezes the filesystem. The functions which need to grab a shared lock in order to allow the unfreeze ioctl to be issued now use the lock grabbed by the freeze code instead. The freeze and unfreeze code take care to make sure that this shared lock will not be dropped while another process is using it. Signed-off-by: Benjamin Marzinski Signed-off-by: Steven Whitehouse --- fs/gfs2/aops.c | 2 +- fs/gfs2/file.c | 2 +- fs/gfs2/glops.c | 51 +++++++++++------- fs/gfs2/glops.h | 2 +- fs/gfs2/incore.h | 12 +++-- fs/gfs2/inode.c | 40 ++++++++++---- fs/gfs2/log.c | 93 +++++++++++++++++++++----------- fs/gfs2/log.h | 11 +++- fs/gfs2/ops_fstype.c | 22 ++++++-- fs/gfs2/quota.c | 2 +- fs/gfs2/recovery.c | 22 ++++---- fs/gfs2/rgrp.c | 2 +- fs/gfs2/super.c | 69 +++++++++++++++--------- fs/gfs2/sys.c | 4 +- fs/gfs2/trans.c | 44 +++------------ include/uapi/linux/gfs2_ondisk.h | 2 +- 16 files changed, 227 insertions(+), 153 deletions(-) diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c index ce62dcac90b6..5a49b037da81 100644 --- a/fs/gfs2/aops.c +++ b/fs/gfs2/aops.c @@ -431,7 +431,7 @@ static int gfs2_jdata_writepages(struct address_space *mapping, ret = gfs2_write_cache_jdata(mapping, wbc); if (ret == 0 && wbc->sync_mode == WB_SYNC_ALL) { - gfs2_log_flush(sdp, ip->i_gl); + gfs2_log_flush(sdp, ip->i_gl, NORMAL_FLUSH); ret = gfs2_write_cache_jdata(mapping, wbc); } return ret; diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c index 80d67253623c..606525215acc 100644 --- a/fs/gfs2/file.c +++ b/fs/gfs2/file.c @@ -256,7 +256,7 @@ static int do_gfs2_set_flags(struct file *filp, u32 reqflags, u32 mask) } if ((flags ^ new_flags) & GFS2_DIF_JDATA) { if (flags & GFS2_DIF_JDATA) - gfs2_log_flush(sdp, ip->i_gl); + gfs2_log_flush(sdp, ip->i_gl, NORMAL_FLUSH); error = filemap_fdatawrite(inode->i_mapping); if (error) goto out; diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c index 54b66809e818..0b527939c46f 100644 --- a/fs/gfs2/glops.c +++ b/fs/gfs2/glops.c @@ -89,18 +89,23 @@ static void gfs2_ail_empty_gl(struct gfs2_glock *gl) if (!tr.tr_revokes) return; - /* A shortened, inline version of gfs2_trans_begin() */ + /* A shortened, inline version of gfs2_trans_begin() + * tr->alloced is not set since the transaction structure is + * on the stack */ tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64)); tr.tr_ip = (unsigned long)__builtin_return_address(0); sb_start_intwrite(sdp->sd_vfs); - gfs2_log_reserve(sdp, tr.tr_reserved); + if (gfs2_log_reserve(sdp, tr.tr_reserved) < 0) { + sb_end_intwrite(sdp->sd_vfs); + return; + } WARN_ON_ONCE(current->journal_info); current->journal_info = &tr; __gfs2_ail_flush(gl, 0, tr.tr_revokes); gfs2_trans_end(sdp); - gfs2_log_flush(sdp, NULL); + gfs2_log_flush(sdp, NULL, NORMAL_FLUSH); } void gfs2_ail_flush(struct gfs2_glock *gl, bool fsync) @@ -121,7 +126,7 @@ void gfs2_ail_flush(struct gfs2_glock *gl, bool fsync) return; __gfs2_ail_flush(gl, fsync, max_revokes); gfs2_trans_end(sdp); - gfs2_log_flush(sdp, NULL); + gfs2_log_flush(sdp, NULL, NORMAL_FLUSH); } /** @@ -144,7 +149,7 @@ static void rgrp_go_sync(struct gfs2_glock *gl) return; GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE); - gfs2_log_flush(sdp, gl); + gfs2_log_flush(sdp, gl, NORMAL_FLUSH); filemap_fdatawrite_range(mapping, gl->gl_vm.start, gl->gl_vm.end); error = filemap_fdatawait_range(mapping, gl->gl_vm.start, gl->gl_vm.end); mapping_set_error(mapping, error); @@ -206,7 +211,7 @@ static void inode_go_sync(struct gfs2_glock *gl) GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE); - gfs2_log_flush(gl->gl_sbd, gl); + gfs2_log_flush(gl->gl_sbd, gl, NORMAL_FLUSH); filemap_fdatawrite(metamapping); if (ip) { struct address_space *mapping = ip->i_inode.i_mapping; @@ -253,7 +258,7 @@ static void inode_go_inval(struct gfs2_glock *gl, int flags) } if (ip == GFS2_I(gl->gl_sbd->sd_rindex)) { - gfs2_log_flush(gl->gl_sbd, NULL); + gfs2_log_flush(gl->gl_sbd, NULL, NORMAL_FLUSH); gl->gl_sbd->sd_rindex_uptodate = 0; } if (ip && S_ISREG(ip->i_inode.i_mode)) @@ -455,31 +460,39 @@ static void inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl) } /** - * trans_go_sync - promote/demote the transaction glock + * freeze_go_sync - promote/demote the freeze glock * @gl: the glock * @state: the requested state * @flags: * */ -static void trans_go_sync(struct gfs2_glock *gl) +static void freeze_go_sync(struct gfs2_glock *gl) { struct gfs2_sbd *sdp = gl->gl_sbd; + DEFINE_WAIT(wait); - if (gl->gl_state != LM_ST_UNLOCKED && + if (gl->gl_state == LM_ST_SHARED && test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { - gfs2_meta_syncfs(sdp); - gfs2_log_shutdown(sdp); + atomic_set(&sdp->sd_log_freeze, 1); + wake_up(&sdp->sd_logd_waitq); + do { + prepare_to_wait(&sdp->sd_log_frozen_wait, &wait, + TASK_UNINTERRUPTIBLE); + if (atomic_read(&sdp->sd_log_freeze)) + io_schedule(); + } while(atomic_read(&sdp->sd_log_freeze)); + finish_wait(&sdp->sd_log_frozen_wait, &wait); } } /** - * trans_go_xmote_bh - After promoting/demoting the transaction glock + * freeze_go_xmote_bh - After promoting/demoting the freeze glock * @gl: the glock * */ -static int trans_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh) +static int freeze_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh) { struct gfs2_sbd *sdp = gl->gl_sbd; struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode); @@ -512,7 +525,7 @@ static int trans_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh) * Always returns 0 */ -static int trans_go_demote_ok(const struct gfs2_glock *gl) +static int freeze_go_demote_ok(const struct gfs2_glock *gl) { return 0; } @@ -563,10 +576,10 @@ const struct gfs2_glock_operations gfs2_rgrp_glops = { .go_flags = GLOF_LVB, }; -const struct gfs2_glock_operations gfs2_trans_glops = { - .go_sync = trans_go_sync, - .go_xmote_bh = trans_go_xmote_bh, - .go_demote_ok = trans_go_demote_ok, +const struct gfs2_glock_operations gfs2_freeze_glops = { + .go_sync = freeze_go_sync, + .go_xmote_bh = freeze_go_xmote_bh, + .go_demote_ok = freeze_go_demote_ok, .go_type = LM_TYPE_NONDISK, }; diff --git a/fs/gfs2/glops.h b/fs/gfs2/glops.h index bf95a2dc1662..7455d2629bcb 100644 --- a/fs/gfs2/glops.h +++ b/fs/gfs2/glops.h @@ -15,7 +15,7 @@ extern const struct gfs2_glock_operations gfs2_meta_glops; extern const struct gfs2_glock_operations gfs2_inode_glops; extern const struct gfs2_glock_operations gfs2_rgrp_glops; -extern const struct gfs2_glock_operations gfs2_trans_glops; +extern const struct gfs2_glock_operations gfs2_freeze_glops; extern const struct gfs2_glock_operations gfs2_iopen_glops; extern const struct gfs2_glock_operations gfs2_flock_glops; extern const struct gfs2_glock_operations gfs2_nondisk_glops; diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h index bdf70c18610c..2434a96f95df 100644 --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -465,9 +465,7 @@ struct gfs2_trans { unsigned int tr_reserved; unsigned int tr_touched:1; unsigned int tr_attached:1; - - struct gfs2_holder tr_t_gh; - + unsigned int tr_alloced:1; unsigned int tr_num_buf_new; unsigned int tr_num_databuf_new; @@ -682,7 +680,7 @@ struct gfs2_sbd { struct lm_lockstruct sd_lockstruct; struct gfs2_holder sd_live_gh; struct gfs2_glock *sd_rename_gl; - struct gfs2_glock *sd_trans_gl; + struct gfs2_glock *sd_freeze_gl; wait_queue_head_t sd_glock_wait; atomic_t sd_glock_disposal; struct completion sd_locking_init; @@ -794,6 +792,12 @@ struct gfs2_sbd { /* For quiescing the filesystem */ struct gfs2_holder sd_freeze_gh; + struct gfs2_holder sd_freeze_root_gh; + struct gfs2_holder sd_thaw_gh; + atomic_t sd_log_freeze; + atomic_t sd_frozen_root; + wait_queue_head_t sd_frozen_root_wait; + wait_queue_head_t sd_log_frozen_wait; char sd_fsname[GFS2_FSNAME_LEN]; char sd_table_name[GFS2_FSNAME_LEN]; diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 28cc7bf6575a..e62e59477884 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -1613,18 +1613,26 @@ int gfs2_permission(struct inode *inode, int mask) { struct gfs2_inode *ip; struct gfs2_holder i_gh; + struct gfs2_sbd *sdp = GFS2_SB(inode); int error; int unlock = 0; + int frozen_root = 0; ip = GFS2_I(inode); if (gfs2_glock_is_locked_by_me(ip->i_gl) == NULL) { - if (mask & MAY_NOT_BLOCK) - return -ECHILD; - error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh); - if (error) - return error; - unlock = 1; + if (unlikely(gfs2_glock_is_held_excl(sdp->sd_freeze_gl) && + inode == sdp->sd_root_dir->d_inode && + atomic_inc_not_zero(&sdp->sd_frozen_root))) + frozen_root = 1; + else { + if (mask & MAY_NOT_BLOCK) + return -ECHILD; + error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh); + if (error) + return error; + unlock = 1; + } } if ((mask & MAY_WRITE) && IS_IMMUTABLE(inode)) @@ -1633,6 +1641,8 @@ int gfs2_permission(struct inode *inode, int mask) error = generic_permission(inode, mask); if (unlock) gfs2_glock_dq_uninit(&i_gh); + else if (frozen_root && atomic_dec_and_test(&sdp->sd_frozen_root)) + wake_up(&sdp->sd_frozen_root_wait); return error; } @@ -1805,19 +1815,29 @@ static int gfs2_getattr(struct vfsmount *mnt, struct dentry *dentry, struct inode *inode = dentry->d_inode; struct gfs2_inode *ip = GFS2_I(inode); struct gfs2_holder gh; + struct gfs2_sbd *sdp = GFS2_SB(inode); int error; int unlock = 0; + int frozen_root = 0; if (gfs2_glock_is_locked_by_me(ip->i_gl) == NULL) { - error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh); - if (error) - return error; - unlock = 1; + if (unlikely(gfs2_glock_is_held_excl(sdp->sd_freeze_gl) && + inode == sdp->sd_root_dir->d_inode && + atomic_inc_not_zero(&sdp->sd_frozen_root))) + frozen_root = 1; + else { + error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh); + if (error) + return error; + unlock = 1; + } } generic_fillattr(inode, stat); if (unlock) gfs2_glock_dq_uninit(&gh); + else if (frozen_root && atomic_dec_and_test(&sdp->sd_frozen_root)) + wake_up(&sdp->sd_frozen_root_wait); return 0; } diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c index 4a14d504ef83..3966fadbcebd 100644 --- a/fs/gfs2/log.c +++ b/fs/gfs2/log.c @@ -300,6 +300,23 @@ static void ail2_empty(struct gfs2_sbd *sdp, unsigned int new_tail) spin_unlock(&sdp->sd_ail_lock); } +/** + * gfs2_log_release - Release a given number of log blocks + * @sdp: The GFS2 superblock + * @blks: The number of blocks + * + */ + +void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks) +{ + + atomic_add(blks, &sdp->sd_log_blks_free); + trace_gfs2_log_blocks(sdp, blks); + gfs2_assert_withdraw(sdp, atomic_read(&sdp->sd_log_blks_free) <= + sdp->sd_jdesc->jd_blocks); + up_read(&sdp->sd_log_flush_lock); +} + /** * gfs2_log_reserve - Make a log reservation * @sdp: The GFS2 superblock @@ -358,7 +375,10 @@ retry: wake_up(&sdp->sd_log_waitq); down_read(&sdp->sd_log_flush_lock); - + if (unlikely(!test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags))) { + gfs2_log_release(sdp, blks); + return -EROFS; + } return 0; } @@ -671,7 +691,8 @@ static void log_write_header(struct gfs2_sbd *sdp, u32 flags) * */ -void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl) +void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl, + enum gfs2_flush_type type) { struct gfs2_trans *tr; @@ -723,6 +744,42 @@ void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl) } spin_unlock(&sdp->sd_ail_lock); gfs2_log_unlock(sdp); + + if (atomic_read(&sdp->sd_log_freeze)) + type = FREEZE_FLUSH; + if (type != NORMAL_FLUSH) { + if (!sdp->sd_log_idle) { + for (;;) { + gfs2_ail1_start(sdp); + gfs2_ail1_wait(sdp); + if (gfs2_ail1_empty(sdp)) + break; + } + atomic_dec(&sdp->sd_log_blks_free); /* Adjust for unreserved buffer */ + trace_gfs2_log_blocks(sdp, -1); + sdp->sd_log_flush_wrapped = 0; + log_write_header(sdp, 0); + sdp->sd_log_head = sdp->sd_log_flush_head; + } + if (type == SHUTDOWN_FLUSH || type == FREEZE_FLUSH) + gfs2_log_shutdown(sdp); + if (type == FREEZE_FLUSH) { + int error; + + atomic_set(&sdp->sd_log_freeze, 0); + wake_up(&sdp->sd_log_frozen_wait); + error = gfs2_glock_nq_init(sdp->sd_freeze_gl, + LM_ST_SHARED, 0, + &sdp->sd_thaw_gh); + if (error) { + printk(KERN_INFO "GFS2: couln't get freeze lock : %d\n", error); + gfs2_assert_withdraw(sdp, 0); + } + else + gfs2_glock_dq_uninit(&sdp->sd_thaw_gh); + } + } + trace_gfs2_log_flush(sdp, 0); up_write(&sdp->sd_log_flush_lock); @@ -761,7 +818,7 @@ static void log_refund(struct gfs2_sbd *sdp, struct gfs2_trans *tr) if (sdp->sd_log_tr) { gfs2_merge_trans(sdp->sd_log_tr, tr); } else if (tr->tr_num_buf_new || tr->tr_num_databuf_new) { - gfs2_assert_withdraw(sdp, tr->tr_t_gh.gh_gl); + gfs2_assert_withdraw(sdp, tr->tr_alloced); sdp->sd_log_tr = tr; tr->tr_attached = 1; } @@ -813,8 +870,6 @@ void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) void gfs2_log_shutdown(struct gfs2_sbd *sdp) { - down_write(&sdp->sd_log_flush_lock); - gfs2_assert_withdraw(sdp, !sdp->sd_log_blks_reserved); gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke); gfs2_assert_withdraw(sdp, list_empty(&sdp->sd_ail1_list)); @@ -824,38 +879,16 @@ void gfs2_log_shutdown(struct gfs2_sbd *sdp) log_write_header(sdp, GFS2_LOG_HEAD_UNMOUNT); - gfs2_assert_warn(sdp, atomic_read(&sdp->sd_log_blks_free) == sdp->sd_jdesc->jd_blocks); gfs2_assert_warn(sdp, sdp->sd_log_head == sdp->sd_log_tail); gfs2_assert_warn(sdp, list_empty(&sdp->sd_ail2_list)); sdp->sd_log_head = sdp->sd_log_flush_head; sdp->sd_log_tail = sdp->sd_log_head; - - up_write(&sdp->sd_log_flush_lock); -} - - -/** - * gfs2_meta_syncfs - sync all the buffers in a filesystem - * @sdp: the filesystem - * - */ - -void gfs2_meta_syncfs(struct gfs2_sbd *sdp) -{ - gfs2_log_flush(sdp, NULL); - for (;;) { - gfs2_ail1_start(sdp); - gfs2_ail1_wait(sdp); - if (gfs2_ail1_empty(sdp)) - break; - } - gfs2_log_flush(sdp, NULL); } static inline int gfs2_jrnl_flush_reqd(struct gfs2_sbd *sdp) { - return (atomic_read(&sdp->sd_log_pinned) >= atomic_read(&sdp->sd_log_thresh1)); + return (atomic_read(&sdp->sd_log_pinned) >= atomic_read(&sdp->sd_log_thresh1) || atomic_read(&sdp->sd_log_freeze)); } static inline int gfs2_ail_flush_reqd(struct gfs2_sbd *sdp) @@ -882,14 +915,14 @@ int gfs2_logd(void *data) if (gfs2_jrnl_flush_reqd(sdp) || t == 0) { gfs2_ail1_empty(sdp); - gfs2_log_flush(sdp, NULL); + gfs2_log_flush(sdp, NULL, NORMAL_FLUSH); } if (gfs2_ail_flush_reqd(sdp)) { gfs2_ail1_start(sdp); gfs2_ail1_wait(sdp); gfs2_ail1_empty(sdp); - gfs2_log_flush(sdp, NULL); + gfs2_log_flush(sdp, NULL, NORMAL_FLUSH); } if (!gfs2_ail_flush_reqd(sdp)) diff --git a/fs/gfs2/log.h b/fs/gfs2/log.h index 37216634f0aa..9499a6049212 100644 --- a/fs/gfs2/log.h +++ b/fs/gfs2/log.h @@ -63,14 +63,21 @@ extern void gfs2_ordered_del_inode(struct gfs2_inode *ip); extern unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct, unsigned int ssize); +extern void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks); extern int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks); -extern void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl); +enum gfs2_flush_type { + NORMAL_FLUSH = 0, + SYNC_FLUSH, + SHUTDOWN_FLUSH, + FREEZE_FLUSH +}; +extern void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl, + enum gfs2_flush_type type); extern void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans); extern void gfs2_remove_from_ail(struct gfs2_bufdata *bd); extern void gfs2_ail1_flush(struct gfs2_sbd *sdp, struct writeback_control *wbc); extern void gfs2_log_shutdown(struct gfs2_sbd *sdp); -extern void gfs2_meta_syncfs(struct gfs2_sbd *sdp); extern int gfs2_logd(void *data); extern void gfs2_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd); extern void gfs2_write_revokes(struct gfs2_sbd *sdp); diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c index 22f954051bb8..be45c79f6745 100644 --- a/fs/gfs2/ops_fstype.c +++ b/fs/gfs2/ops_fstype.c @@ -129,6 +129,10 @@ static struct gfs2_sbd *init_sbd(struct super_block *sb) init_rwsem(&sdp->sd_log_flush_lock); atomic_set(&sdp->sd_log_in_flight, 0); init_waitqueue_head(&sdp->sd_log_flush_wait); + init_waitqueue_head(&sdp->sd_log_frozen_wait); + atomic_set(&sdp->sd_log_freeze, 0); + atomic_set(&sdp->sd_frozen_root, 0); + init_waitqueue_head(&sdp->sd_frozen_root_wait); return sdp; } @@ -419,8 +423,8 @@ static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh, goto fail_live; } - error = gfs2_glock_get(sdp, GFS2_TRANS_LOCK, &gfs2_trans_glops, - CREATE, &sdp->sd_trans_gl); + error = gfs2_glock_get(sdp, GFS2_FREEZE_LOCK, &gfs2_freeze_glops, + CREATE, &sdp->sd_freeze_gl); if (error) { fs_err(sdp, "can't create transaction glock: %d\n", error); goto fail_rename; @@ -429,7 +433,7 @@ static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh, return 0; fail_trans: - gfs2_glock_put(sdp->sd_trans_gl); + gfs2_glock_put(sdp->sd_freeze_gl); fail_rename: gfs2_glock_put(sdp->sd_rename_gl); fail_live: @@ -755,7 +759,15 @@ static int init_journal(struct gfs2_sbd *sdp, int undo) set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags); gfs2_glock_dq_uninit(&ji_gh); jindex = 0; - + if (!sdp->sd_args.ar_spectator) { + error = gfs2_glock_nq_init(sdp->sd_freeze_gl, LM_ST_SHARED, 0, + &sdp->sd_thaw_gh); + if (error) { + fs_err(sdp, "can't acquire freeze glock: %d\n", error); + goto fail_jinode_gh; + } + } + gfs2_glock_dq_uninit(&sdp->sd_thaw_gh); return 0; fail_jinode_gh: @@ -1380,7 +1392,7 @@ static void gfs2_kill_sb(struct super_block *sb) return; } - gfs2_meta_syncfs(sdp); + gfs2_log_flush(sdp, NULL, SYNC_FLUSH); dput(sdp->sd_root_dir); dput(sdp->sd_master_dir); sdp->sd_root_dir = NULL; diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c index 619389649d03..64b29f7f6b4c 100644 --- a/fs/gfs2/quota.c +++ b/fs/gfs2/quota.c @@ -880,7 +880,7 @@ out: gfs2_glock_dq_uninit(&ghs[qx]); mutex_unlock(&ip->i_inode.i_mutex); kfree(ghs); - gfs2_log_flush(ip->i_gl->gl_sbd, ip->i_gl); + gfs2_log_flush(ip->i_gl->gl_sbd, ip->i_gl, NORMAL_FLUSH); return error; } diff --git a/fs/gfs2/recovery.c b/fs/gfs2/recovery.c index 7ad4094d68c0..a4ed78b5f47e 100644 --- a/fs/gfs2/recovery.c +++ b/fs/gfs2/recovery.c @@ -454,7 +454,7 @@ void gfs2_recover_func(struct work_struct *work) struct gfs2_inode *ip = GFS2_I(jd->jd_inode); struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); struct gfs2_log_header_host head; - struct gfs2_holder j_gh, ji_gh, t_gh; + struct gfs2_holder j_gh, ji_gh, thaw_gh; unsigned long t; int ro = 0; unsigned int pass; @@ -508,11 +508,11 @@ void gfs2_recover_func(struct work_struct *work) t = jiffies; - /* Acquire a shared hold on the transaction lock */ + /* Acquire a shared hold on the freeze lock */ - error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED, - LM_FLAG_NOEXP | LM_FLAG_PRIORITY | - GL_NOCACHE, &t_gh); + error = gfs2_glock_nq_init(sdp->sd_freeze_gl, LM_ST_SHARED, + LM_FLAG_NOEXP | LM_FLAG_PRIORITY, + &thaw_gh); if (error) goto fail_gunlock_ji; @@ -538,7 +538,7 @@ void gfs2_recover_func(struct work_struct *work) fs_warn(sdp, "jid=%u: Can't replay: read-only block " "device\n", jd->jd_jid); error = -EROFS; - goto fail_gunlock_tr; + goto fail_gunlock_thaw; } fs_info(sdp, "jid=%u: Replaying journal...\n", jd->jd_jid); @@ -549,14 +549,14 @@ void gfs2_recover_func(struct work_struct *work) head.lh_blkno, pass); lops_after_scan(jd, error, pass); if (error) - goto fail_gunlock_tr; + goto fail_gunlock_thaw; } error = clean_journal(jd, &head); if (error) - goto fail_gunlock_tr; + goto fail_gunlock_thaw; - gfs2_glock_dq_uninit(&t_gh); + gfs2_glock_dq_uninit(&thaw_gh); t = DIV_ROUND_UP(jiffies - t, HZ); fs_info(sdp, "jid=%u: Journal replayed in %lus\n", jd->jd_jid, t); @@ -572,8 +572,8 @@ void gfs2_recover_func(struct work_struct *work) fs_info(sdp, "jid=%u: Done\n", jd->jd_jid); goto done; -fail_gunlock_tr: - gfs2_glock_dq_uninit(&t_gh); +fail_gunlock_thaw: + gfs2_glock_dq_uninit(&thaw_gh); fail_gunlock_ji: if (jlocked) { gfs2_glock_dq_uninit(&ji_gh); diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c index 281a7716e3f3..db629d1bd1bd 100644 --- a/fs/gfs2/rgrp.c +++ b/fs/gfs2/rgrp.c @@ -2001,7 +2001,7 @@ next_rgrp: } /* Flushing the log may release space */ if (loops == 2) - gfs2_log_flush(sdp, NULL); + gfs2_log_flush(sdp, NULL, NORMAL_FLUSH); } return -ENOSPC; diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index de8afad89e51..1319b5c4ec68 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -399,7 +399,7 @@ int gfs2_make_fs_rw(struct gfs2_sbd *sdp) { struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode); struct gfs2_glock *j_gl = ip->i_gl; - struct gfs2_holder t_gh; + struct gfs2_holder thaw_gh; struct gfs2_log_header_host head; int error; @@ -407,7 +407,8 @@ int gfs2_make_fs_rw(struct gfs2_sbd *sdp) if (error) return error; - error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED, 0, &t_gh); + error = gfs2_glock_nq_init(sdp->sd_freeze_gl, LM_ST_SHARED, 0, + &thaw_gh); if (error) goto fail_threads; @@ -433,13 +434,13 @@ int gfs2_make_fs_rw(struct gfs2_sbd *sdp) set_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags); - gfs2_glock_dq_uninit(&t_gh); + gfs2_glock_dq_uninit(&thaw_gh); return 0; fail: - t_gh.gh_flags |= GL_NOCACHE; - gfs2_glock_dq_uninit(&t_gh); + thaw_gh.gh_flags |= GL_NOCACHE; + gfs2_glock_dq_uninit(&thaw_gh); fail_threads: kthread_stop(sdp->sd_quotad_process); kthread_stop(sdp->sd_logd_process); @@ -635,15 +636,21 @@ struct lfcc { */ static int gfs2_lock_fs_check_clean(struct gfs2_sbd *sdp, - struct gfs2_holder *t_gh) + struct gfs2_holder *freeze_gh) { struct gfs2_inode *ip; struct gfs2_jdesc *jd; struct lfcc *lfcc; LIST_HEAD(list); struct gfs2_log_header_host lh; + struct gfs2_inode *dip = GFS2_I(sdp->sd_root_dir->d_inode); int error; + error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, + &sdp->sd_freeze_root_gh); + if (error) + return error; + atomic_set(&sdp->sd_frozen_root, 1); list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { lfcc = kmalloc(sizeof(struct lfcc), GFP_KERNEL); if (!lfcc) { @@ -659,8 +666,8 @@ static int gfs2_lock_fs_check_clean(struct gfs2_sbd *sdp, list_add(&lfcc->list, &list); } - error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_DEFERRED, - GL_NOCACHE, t_gh); + error = gfs2_glock_nq_init(sdp->sd_freeze_gl, LM_ST_EXCLUSIVE, + GL_NOCACHE, freeze_gh); list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { error = gfs2_jdesc_check(jd); @@ -676,7 +683,7 @@ static int gfs2_lock_fs_check_clean(struct gfs2_sbd *sdp, } if (error) - gfs2_glock_dq_uninit(t_gh); + gfs2_glock_dq_uninit(freeze_gh); out: while (!list_empty(&list)) { @@ -685,6 +692,11 @@ out: gfs2_glock_dq_uninit(&lfcc->gh); kfree(lfcc); } + if (error) { + atomic_dec(&sdp->sd_frozen_root); + wait_event(sdp->sd_frozen_root_wait, atomic_read(&sdp->sd_frozen_root) == 0); + gfs2_glock_dq_uninit(&sdp->sd_freeze_root_gh); + } return error; } @@ -742,7 +754,7 @@ static int gfs2_write_inode(struct inode *inode, struct writeback_control *wbc) int ret = 0; if (wbc->sync_mode == WB_SYNC_ALL) - gfs2_log_flush(GFS2_SB(inode), ip->i_gl); + gfs2_log_flush(GFS2_SB(inode), ip->i_gl, NORMAL_FLUSH); if (bdi->dirty_exceeded) gfs2_ail1_flush(sdp, wbc); else @@ -822,9 +834,18 @@ out: static int gfs2_make_fs_ro(struct gfs2_sbd *sdp) { - struct gfs2_holder t_gh; + struct gfs2_holder thaw_gh; int error; + error = gfs2_glock_nq_init(sdp->sd_freeze_gl, LM_ST_SHARED, GL_NOCACHE, + &thaw_gh); + if (error && !test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) + return error; + + down_write(&sdp->sd_log_flush_lock); + clear_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags); + up_write(&sdp->sd_log_flush_lock); + kthread_stop(sdp->sd_quotad_process); kthread_stop(sdp->sd_logd_process); @@ -832,18 +853,11 @@ static int gfs2_make_fs_ro(struct gfs2_sbd *sdp) gfs2_quota_sync(sdp->sd_vfs, 0); gfs2_statfs_sync(sdp->sd_vfs, 0); - error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED, GL_NOCACHE, - &t_gh); - if (error && !test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) - return error; + gfs2_log_flush(sdp, NULL, SHUTDOWN_FLUSH); + gfs2_assert_warn(sdp, atomic_read(&sdp->sd_log_blks_free) == sdp->sd_jdesc->jd_blocks); - gfs2_meta_syncfs(sdp); - gfs2_log_shutdown(sdp); - - clear_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags); - - if (t_gh.gh_gl) - gfs2_glock_dq_uninit(&t_gh); + if (thaw_gh.gh_gl) + gfs2_glock_dq_uninit(&thaw_gh); gfs2_quota_cleanup(sdp); @@ -900,7 +914,7 @@ restart: iput(sdp->sd_quota_inode); gfs2_glock_put(sdp->sd_rename_gl); - gfs2_glock_put(sdp->sd_trans_gl); + gfs2_glock_put(sdp->sd_freeze_gl); if (!sdp->sd_args.ar_spectator) { gfs2_glock_dq_uninit(&sdp->sd_journal_gh); @@ -935,8 +949,8 @@ static int gfs2_sync_fs(struct super_block *sb, int wait) struct gfs2_sbd *sdp = sb->s_fs_info; gfs2_quota_sync(sb, -1); - if (wait && sdp) - gfs2_log_flush(sdp, NULL); + if (wait && sdp && !atomic_read(&sdp->sd_log_freeze)) + gfs2_log_flush(sdp, NULL, NORMAL_FLUSH); return 0; } @@ -986,6 +1000,9 @@ static int gfs2_unfreeze(struct super_block *sb) struct gfs2_sbd *sdp = sb->s_fs_info; gfs2_glock_dq_uninit(&sdp->sd_freeze_gh); + atomic_dec(&sdp->sd_frozen_root); + wait_event(sdp->sd_frozen_root_wait, atomic_read(&sdp->sd_frozen_root) == 0); + gfs2_glock_dq_uninit(&sdp->sd_freeze_root_gh); return 0; } @@ -1525,7 +1542,7 @@ static void gfs2_evict_inode(struct inode *inode) goto out_unlock; out_truncate: - gfs2_log_flush(sdp, ip->i_gl); + gfs2_log_flush(sdp, ip->i_gl, NORMAL_FLUSH); if (test_bit(GLF_DIRTY, &ip->i_gl->gl_flags)) { struct address_space *metamapping = gfs2_glock2aspace(ip->i_gl); filemap_fdatawrite(metamapping); diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c index de25d5577e5d..7bc17edcb51f 100644 --- a/fs/gfs2/sys.c +++ b/fs/gfs2/sys.c @@ -240,8 +240,8 @@ static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len if (gltype > LM_TYPE_JOURNAL) return -EINVAL; - if (gltype == LM_TYPE_NONDISK && glnum == GFS2_TRANS_LOCK) - glops = &gfs2_trans_glops; + if (gltype == LM_TYPE_NONDISK && glnum == GFS2_FREEZE_LOCK) + glops = &gfs2_freeze_glops; else glops = gfs2_glops_list[gltype]; if (glops == NULL) diff --git a/fs/gfs2/trans.c b/fs/gfs2/trans.c index bead90d27bad..0546ab4e28e8 100644 --- a/fs/gfs2/trans.c +++ b/fs/gfs2/trans.c @@ -48,6 +48,7 @@ int gfs2_trans_begin(struct gfs2_sbd *sdp, unsigned int blocks, tr->tr_blocks = blocks; tr->tr_revokes = revokes; tr->tr_reserved = 1; + tr->tr_alloced = 1; if (blocks) tr->tr_reserved += 6 + blocks; if (revokes) @@ -57,48 +58,22 @@ int gfs2_trans_begin(struct gfs2_sbd *sdp, unsigned int blocks, INIT_LIST_HEAD(&tr->tr_buf); sb_start_intwrite(sdp->sd_vfs); - 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; error = gfs2_log_reserve(sdp, tr->tr_reserved); if (error) - goto fail_gunlock; + goto fail; current->journal_info = tr; return 0; -fail_gunlock: - gfs2_glock_dq(&tr->tr_t_gh); - -fail_holder_uninit: +fail: sb_end_intwrite(sdp->sd_vfs); - gfs2_holder_uninit(&tr->tr_t_gh); kfree(tr); return error; } -/** - * gfs2_log_release - Release a given number of log blocks - * @sdp: The GFS2 superblock - * @blks: The number of blocks - * - */ - -static void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks) -{ - - atomic_add(blks, &sdp->sd_log_blks_free); - trace_gfs2_log_blocks(sdp, blks); - gfs2_assert_withdraw(sdp, atomic_read(&sdp->sd_log_blks_free) <= - sdp->sd_jdesc->jd_blocks); - up_read(&sdp->sd_log_flush_lock); -} - static void gfs2_print_trans(const struct gfs2_trans *tr) { pr_warn("Transaction created at: %pSR\n", (void *)tr->tr_ip); @@ -119,11 +94,8 @@ void gfs2_trans_end(struct gfs2_sbd *sdp) if (!tr->tr_touched) { gfs2_log_release(sdp, tr->tr_reserved); - if (tr->tr_t_gh.gh_gl) { - gfs2_glock_dq(&tr->tr_t_gh); - gfs2_holder_uninit(&tr->tr_t_gh); + if (tr->tr_alloced) kfree(tr); - } sb_end_intwrite(sdp->sd_vfs); return; } @@ -137,16 +109,12 @@ void gfs2_trans_end(struct gfs2_sbd *sdp) gfs2_print_trans(tr); gfs2_log_commit(sdp, tr); - if (tr->tr_t_gh.gh_gl) { - gfs2_glock_dq(&tr->tr_t_gh); - gfs2_holder_uninit(&tr->tr_t_gh); - if (!tr->tr_attached) + if (tr->tr_alloced && !tr->tr_attached) kfree(tr); - } up_read(&sdp->sd_log_flush_lock); if (sdp->sd_vfs->s_flags & MS_SYNCHRONOUS) - gfs2_log_flush(sdp, NULL); + gfs2_log_flush(sdp, NULL, NORMAL_FLUSH); sb_end_intwrite(sdp->sd_vfs); } diff --git a/include/uapi/linux/gfs2_ondisk.h b/include/uapi/linux/gfs2_ondisk.h index db3fdd083882..1a763eaae0bb 100644 --- a/include/uapi/linux/gfs2_ondisk.h +++ b/include/uapi/linux/gfs2_ondisk.h @@ -20,7 +20,7 @@ #define GFS2_MOUNT_LOCK 0 #define GFS2_LIVE_LOCK 1 -#define GFS2_TRANS_LOCK 2 +#define GFS2_FREEZE_LOCK 2 #define GFS2_RENAME_LOCK 3 #define GFS2_CONTROL_LOCK 4 #define GFS2_MOUNTED_LOCK 5 From c62baf65bfb683d976a92c59661c0dbb18f41239 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Wed, 14 May 2014 18:32:31 +0200 Subject: [PATCH 4/6] GFS2: fs/gfs2/bmap.c: kernel-doc warning fixes Fix 2 typos and move one definition which was between function comments and function definition (yet another kernel-doc warning) Cc: Andrew Morton Signed-off-by: Fabian Frederick Signed-off-by: Steven Whitehouse --- fs/gfs2/bmap.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index c62d4b9f51dc..e6ee5b6e8d99 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -707,7 +707,7 @@ int gfs2_extent_map(struct inode *inode, u64 lblock, int *new, u64 *dblock, unsi * @top: The first pointer in the buffer * @bottom: One more than the last pointer * @height: the height this buffer is at - * @data: a pointer to a struct strip_mine + * @sm: a pointer to a struct strip_mine * * Returns: errno */ @@ -992,6 +992,8 @@ unlock: return err; } +#define GFS2_JTRUNC_REVOKES 8192 + /** * gfs2_journaled_truncate - Wrapper for truncate_pagecache for jdata files * @inode: The inode being truncated @@ -1003,8 +1005,6 @@ unlock: * if the number of pages being truncated gets too large. */ -#define GFS2_JTRUNC_REVOKES 8192 - static int gfs2_journaled_truncate(struct inode *inode, u64 oldsize, u64 newsize) { struct gfs2_sbd *sdp = GFS2_SB(inode); @@ -1348,7 +1348,7 @@ void gfs2_free_journal_extents(struct gfs2_jdesc *jd) * gfs2_add_jextent - Add or merge a new extent to extent cache * @jd: The journal descriptor * @lblock: The logical block at start of new extent - * @pblock: The physical block at start of new extent + * @dblock: The physical block at start of new extent * @blocks: Size of extent in fs blocks * * Returns: 0 on success or -ENOMEM From 9dd868e1c009fa1c51bf8d349cda77e0188189fd Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Thu, 15 May 2014 18:57:08 +0200 Subject: [PATCH 5/6] GFS2: fs/gfs2/file.c: kernel-doc warning fixes Related function is not gfs2_set_flags but do_gfs2_set_flags Cc: Andrew Morton Signed-off-by: Fabian Frederick Signed-off-by: Steven Whitehouse --- fs/gfs2/file.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c index 606525215acc..6ab0cfb2e891 100644 --- a/fs/gfs2/file.c +++ b/fs/gfs2/file.c @@ -203,9 +203,9 @@ void gfs2_set_inode_flags(struct inode *inode) GFS2_DIF_INHERIT_JDATA) /** - * gfs2_set_flags - set flags on an inode - * @inode: The inode - * @flags: The flags to set + * do_gfs2_set_flags - set flags on an inode + * @filp: file pointer + * @reqflags: The flags to set * @mask: Indicates which flags are valid * */ @@ -318,7 +318,7 @@ static long gfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) /** * gfs2_size_hint - Give a hint to the size of a write request - * @file: The struct file + * @filep: The struct file * @offset: The file offset of the write * @size: The length of the write * @@ -371,7 +371,7 @@ static int gfs2_allocate_page_backing(struct page *page) /** * gfs2_page_mkwrite - Make a shared, mmap()ed, page writable * @vma: The virtual memory area - * @page: The page which is about to become writable + * @vmf: The virtual memory fault containing the page to become writable * * When the page becomes writable, we need to ensure that we have * blocks allocated on disk to back that page. From 0e48e055a7dfc0cf17bbabe4d9b523ee0b1a9ed6 Mon Sep 17 00:00:00 2001 From: Bob Peterson Date: Mon, 2 Jun 2014 09:40:25 -0400 Subject: [PATCH 6/6] GFS2: Prevent recovery before the local journal is set This patch uses a completion to prevent dlm's recovery process from referencing and trying to recover a journal before a journal has been opened. Signed-off-by: Bob Peterson Signed-off-by: Steven Whitehouse --- fs/gfs2/incore.h | 2 ++ fs/gfs2/ops_fstype.c | 3 +++ fs/gfs2/sys.c | 3 +++ 3 files changed, 8 insertions(+) diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h index 2434a96f95df..67d310c9ada3 100644 --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -728,6 +728,8 @@ struct gfs2_sbd { struct gfs2_holder sd_sc_gh; struct gfs2_holder sd_qc_gh; + struct completion sd_journal_ready; + /* Daemon stuff */ struct task_struct *sd_logd_process; diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c index be45c79f6745..bc564c0d6d16 100644 --- a/fs/gfs2/ops_fstype.c +++ b/fs/gfs2/ops_fstype.c @@ -94,6 +94,7 @@ static struct gfs2_sbd *init_sbd(struct super_block *sb) INIT_LIST_HEAD(&sdp->sd_jindex_list); spin_lock_init(&sdp->sd_jindex_spin); mutex_init(&sdp->sd_jindex_mutex); + init_completion(&sdp->sd_journal_ready); INIT_LIST_HEAD(&sdp->sd_quota_list); mutex_init(&sdp->sd_quota_mutex); @@ -796,6 +797,7 @@ static int init_inodes(struct gfs2_sbd *sdp, int undo) goto fail_qinode; error = init_journal(sdp, undo); + complete_all(&sdp->sd_journal_ready); if (error) goto fail; @@ -1212,6 +1214,7 @@ fail_sb: fail_locking: init_locking(sdp, &mount_gh, UNDO); fail_lm: + complete_all(&sdp->sd_journal_ready); gfs2_gl_hash_clear(sdp); gfs2_lm_unmount(sdp); fail_debug: diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c index 7bc17edcb51f..0e049f9574b5 100644 --- a/fs/gfs2/sys.c +++ b/fs/gfs2/sys.c @@ -407,6 +407,9 @@ int gfs2_recover_set(struct gfs2_sbd *sdp, unsigned jid) struct gfs2_jdesc *jd; int rv; + /* Wait for our primary journal to be initialized */ + wait_for_completion(&sdp->sd_journal_ready); + spin_lock(&sdp->sd_jindex_spin); rv = -EBUSY; if (sdp->sd_jdesc->jd_jid == jid)