From 3b5da0189c93160e44b878d2c72e9552d642497c Mon Sep 17 00:00:00 2001 From: Coly Li Date: Wed, 5 Nov 2008 15:16:24 +0800 Subject: ocfs2: comments typo fix This patch fixes two typos in comments of ocfs2. Signed-off-by: Coly Li Signed-off-by: Mark Fasheh --- fs/ocfs2/dlm/userdlm.h | 2 +- fs/ocfs2/ocfs2.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'fs/ocfs2') diff --git a/fs/ocfs2/dlm/userdlm.h b/fs/ocfs2/dlm/userdlm.h index 39ec27738499..0c3cc03c61fa 100644 --- a/fs/ocfs2/dlm/userdlm.h +++ b/fs/ocfs2/dlm/userdlm.h @@ -33,7 +33,7 @@ #include /* user_lock_res->l_flags flags. */ -#define USER_LOCK_ATTACHED (0x00000001) /* have we initialized +#define USER_LOCK_ATTACHED (0x00000001) /* we have initialized * the lvb */ #define USER_LOCK_BUSY (0x00000002) /* we are currently in * dlm_lock */ diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h index fef7ece32376..3fed9e3d8992 100644 --- a/fs/ocfs2/ocfs2.h +++ b/fs/ocfs2/ocfs2.h @@ -85,7 +85,7 @@ enum ocfs2_unlock_action { }; /* ocfs2_lock_res->l_flags flags. */ -#define OCFS2_LOCK_ATTACHED (0x00000001) /* have we initialized +#define OCFS2_LOCK_ATTACHED (0x00000001) /* we have initialized * the lvb */ #define OCFS2_LOCK_BUSY (0x00000002) /* we are currently in * dlm_lock */ -- cgit v1.2.3 From 66f502a416f18cd36179290746aa53736c6b2828 Mon Sep 17 00:00:00 2001 From: David Teigland Date: Mon, 10 Nov 2008 16:24:57 -0600 Subject: ocfs2: initialize stack_user lvbptr The locking_state dump, ocfs2_dlm_seq_show, reads the lvb on locks where it has not yet been initialized by a lock call. Signed-off-by: David Teigland Acked-by: Joel Becker Signed-off-by: Mark Fasheh --- fs/ocfs2/stack_user.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'fs/ocfs2') diff --git a/fs/ocfs2/stack_user.c b/fs/ocfs2/stack_user.c index faec2d879357..9b76d41a8ac6 100644 --- a/fs/ocfs2/stack_user.c +++ b/fs/ocfs2/stack_user.c @@ -740,6 +740,9 @@ static int user_dlm_lock_status(union ocfs2_dlm_lksb *lksb) static void *user_dlm_lvb(union ocfs2_dlm_lksb *lksb) { + if (!lksb->lksb_fsdlm.sb_lvbptr) + lksb->lksb_fsdlm.sb_lvbptr = (char *)lksb + + sizeof(struct dlm_lksb); return (void *)(lksb->lksb_fsdlm.sb_lvbptr); } -- cgit v1.2.3 From 07f9eebcdfaeefc8f807fa1bcce1d7c3ae6661b1 Mon Sep 17 00:00:00 2001 From: David Teigland Date: Mon, 17 Nov 2008 12:28:48 -0600 Subject: ocfs2: fix wake_up in unlock_ast In ocfs2_unlock_ast(), call wake_up() on lockres before releasing the spin lock on it. As soon as the spin lock is released, the lockres can be freed. Signed-off-by: David Teigland Signed-off-by: Mark Fasheh --- fs/ocfs2/dlmglue.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'fs/ocfs2') diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c index ec684426034b..6e6cc0a2e5f7 100644 --- a/fs/ocfs2/dlmglue.c +++ b/fs/ocfs2/dlmglue.c @@ -2841,9 +2841,8 @@ static void ocfs2_unlock_ast(void *opaque, int error) lockres_clear_flags(lockres, OCFS2_LOCK_BUSY); lockres->l_unlock_action = OCFS2_UNLOCK_INVALID; - spin_unlock_irqrestore(&lockres->l_lock, flags); - wake_up(&lockres->l_event); + spin_unlock_irqrestore(&lockres->l_lock, flags); mlog_exit_void(); } -- cgit v1.2.3 From 07d9a3954a68764aefe16855bcd0f86deeb5c825 Mon Sep 17 00:00:00 2001 From: Coly Li Date: Mon, 17 Nov 2008 12:38:22 +0800 Subject: ocfs2: fix return value set in init_dlmfs_fs() In init_dlmfs_fs(), if calling kmem_cache_create() failed, the code will use return value from calling bdi_init(). The correct behavior should be set status as -ENOMEM before going to "bail:". Signed-off-by: Coly Li Acked-by: Sunil Mushran Signed-off-by: Mark Fasheh --- fs/ocfs2/dlm/dlmfs.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'fs/ocfs2') diff --git a/fs/ocfs2/dlm/dlmfs.c b/fs/ocfs2/dlm/dlmfs.c index 533a789c3ef8..ba962d71b34d 100644 --- a/fs/ocfs2/dlm/dlmfs.c +++ b/fs/ocfs2/dlm/dlmfs.c @@ -608,8 +608,10 @@ static int __init init_dlmfs_fs(void) 0, (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT| SLAB_MEM_SPREAD), dlmfs_init_once); - if (!dlmfs_inode_cache) + if (!dlmfs_inode_cache) { + status = -ENOMEM; goto bail; + } cleanup_inode = 1; user_dlm_worker = create_singlethread_workqueue("user_dlm"); -- cgit v1.2.3 From d6b58f89f7257c8099c2260e2bea042a917d6cdf Mon Sep 17 00:00:00 2001 From: Mark Fasheh Date: Fri, 21 Nov 2008 14:06:55 -0800 Subject: ocfs2: fix regression in ocfs2_read_blocks_sync() We're panicing in ocfs2_read_blocks_sync() if a jbd-managed buffer is seen. At first glance, this seems ok but in reality it can happen. My test case was to just run 'exorcist'. A struct inode is being pushed out of memory but is then re-read at a later time, before the buffer has been checkpointed by jbd. This causes a BUG to be hit in ocfs2_read_blocks_sync(). Reviewed-by: Joel Becker Signed-off-by: Mark Fasheh --- fs/ocfs2/buffer_head_io.c | 15 ++++----------- 1 file changed, 4 insertions(+), 11 deletions(-) (limited to 'fs/ocfs2') diff --git a/fs/ocfs2/buffer_head_io.c b/fs/ocfs2/buffer_head_io.c index 7e947c672469..3a178ec48d7c 100644 --- a/fs/ocfs2/buffer_head_io.c +++ b/fs/ocfs2/buffer_head_io.c @@ -112,7 +112,7 @@ int ocfs2_read_blocks_sync(struct ocfs2_super *osb, u64 block, bh = bhs[i]; if (buffer_jbd(bh)) { - mlog(ML_ERROR, + mlog(ML_BH_IO, "trying to sync read a jbd " "managed bh (blocknr = %llu), skipping\n", (unsigned long long)bh->b_blocknr); @@ -147,15 +147,10 @@ int ocfs2_read_blocks_sync(struct ocfs2_super *osb, u64 block, for (i = nr; i > 0; i--) { bh = bhs[i - 1]; - if (buffer_jbd(bh)) { - mlog(ML_ERROR, - "the journal got the buffer while it was " - "locked for io! (blocknr = %llu)\n", - (unsigned long long)bh->b_blocknr); - BUG(); - } + /* No need to wait on the buffer if it's managed by JBD. */ + if (!buffer_jbd(bh)) + wait_on_buffer(bh); - wait_on_buffer(bh); if (!buffer_uptodate(bh)) { /* Status won't be cleared from here on out, * so we can safely record this and loop back @@ -251,8 +246,6 @@ int ocfs2_read_blocks(struct inode *inode, u64 block, int nr, ignore_cache = 1; } - /* XXX: Can we ever get this and *not* have the cached - * flag set? */ if (buffer_jbd(bh)) { if (ignore_cache) mlog(ML_BH_IO, "trying to sync read a jbd " -- cgit v1.2.3