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| author | Nick Piggin <npiggin@kernel.dk> | 2011-01-07 17:49:33 +1100 |
|---|---|---|
| committer | Nick Piggin <npiggin@kernel.dk> | 2011-01-07 17:50:21 +1100 |
| commit | da5029563a0a026c64821b09e8e7b4fd81d3fe1b (patch) | |
| tree | 5d5618e0cb382390073377b1be7d0aa76879ac54 /fs/configfs/configfs_internal.h | |
| parent | b7ab39f631f505edc2bbdb86620d5493f995c9da (diff) | |
| download | lwn-da5029563a0a026c64821b09e8e7b4fd81d3fe1b.tar.gz lwn-da5029563a0a026c64821b09e8e7b4fd81d3fe1b.zip | |
fs: dcache scale d_unhashed
Protect d_unhashed(dentry) condition with d_lock. This means keeping
DCACHE_UNHASHED bit in synch with hash manipulations.
Signed-off-by: Nick Piggin <npiggin@kernel.dk>
Diffstat (limited to 'fs/configfs/configfs_internal.h')
| -rw-r--r-- | fs/configfs/configfs_internal.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/configfs/configfs_internal.h b/fs/configfs/configfs_internal.h index da6061a6df40..e58b4c30e216 100644 --- a/fs/configfs/configfs_internal.h +++ b/fs/configfs/configfs_internal.h @@ -121,6 +121,7 @@ static inline struct config_item *configfs_get_config_item(struct dentry *dentry struct config_item * item = NULL; spin_lock(&dcache_lock); + spin_lock(&dentry->d_lock); if (!d_unhashed(dentry)) { struct configfs_dirent * sd = dentry->d_fsdata; if (sd->s_type & CONFIGFS_ITEM_LINK) { @@ -129,6 +130,7 @@ static inline struct config_item *configfs_get_config_item(struct dentry *dentry } else item = config_item_get(sd->s_element); } + spin_unlock(&dentry->d_lock); spin_unlock(&dcache_lock); return item; |