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author | Nick Piggin <npiggin@kernel.dk> | 2011-01-07 17:49:35 +1100 |
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committer | Nick Piggin <npiggin@kernel.dk> | 2011-01-07 17:50:22 +1100 |
commit | b23fb0a60379a95e10c671f646b259ea2558421e (patch) | |
tree | 7c3644b91241d32fda502a7be0b78e4c225f8091 /fs/notify | |
parent | 2fd6b7f50797f2e993eea59e0a0b8c6399c811dc (diff) | |
download | kernel_samsung_tuna-b23fb0a60379a95e10c671f646b259ea2558421e.zip kernel_samsung_tuna-b23fb0a60379a95e10c671f646b259ea2558421e.tar.gz kernel_samsung_tuna-b23fb0a60379a95e10c671f646b259ea2558421e.tar.bz2 |
fs: scale inode alias list
Add a new lock, dcache_inode_lock, to protect the inode's i_dentry list
from concurrent modification. d_alias is also protected by d_lock.
Signed-off-by: Nick Piggin <npiggin@kernel.dk>
Diffstat (limited to 'fs/notify')
-rw-r--r-- | fs/notify/fsnotify.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/notify/fsnotify.c b/fs/notify/fsnotify.c index aa4f25e..ae769fc 100644 --- a/fs/notify/fsnotify.c +++ b/fs/notify/fsnotify.c @@ -60,6 +60,7 @@ void __fsnotify_update_child_dentry_flags(struct inode *inode) watched = fsnotify_inode_watches_children(inode); spin_lock(&dcache_lock); + spin_lock(&dcache_inode_lock); /* run all of the dentries associated with this inode. Since this is a * directory, there damn well better only be one item on this list */ list_for_each_entry(alias, &inode->i_dentry, d_alias) { @@ -82,6 +83,7 @@ void __fsnotify_update_child_dentry_flags(struct inode *inode) } spin_unlock(&alias->d_lock); } + spin_unlock(&dcache_inode_lock); spin_unlock(&dcache_lock); } |