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author | Nick Piggin <npiggin@kernel.dk> | 2011-01-07 06:49:32 (GMT) |
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committer | Nick Piggin <npiggin@kernel.dk> | 2011-01-07 06:50:21 (GMT) |
commit | b7ab39f631f505edc2bbdb86620d5493f995c9da (patch) | |
tree | 62be97ebc7fc69ceb601f23312d335ebb8038ee7 /fs/coda/dir.c | |
parent | 2304450783dfde7b0b94ae234edd0dbffa865073 (diff) | |
download | linux-fsl-qoriq-b7ab39f631f505edc2bbdb86620d5493f995c9da.tar.xz |
fs: dcache scale dentry refcount
Make d_count non-atomic and protect it with d_lock. This allows us to ensure a
0 refcount dentry remains 0 without dcache_lock. It is also fairly natural when
we start protecting many other dentry members with d_lock.
Signed-off-by: Nick Piggin <npiggin@kernel.dk>
Diffstat (limited to 'fs/coda/dir.c')
-rw-r--r-- | fs/coda/dir.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/coda/dir.c b/fs/coda/dir.c index 4cce3b07..9e37e8b 100644 --- a/fs/coda/dir.c +++ b/fs/coda/dir.c @@ -559,7 +559,7 @@ static int coda_dentry_revalidate(struct dentry *de, struct nameidata *nd) if (cii->c_flags & C_FLUSH) coda_flag_inode_children(inode, C_FLUSH); - if (atomic_read(&de->d_count) > 1) + if (de->d_count > 1) /* pretend it's valid, but don't change the flags */ goto out; |