diff options
| 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 /drivers/usb/core | |
| parent | b7ab39f631f505edc2bbdb86620d5493f995c9da (diff) | |
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 'drivers/usb/core')
| -rw-r--r-- | drivers/usb/core/inode.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/core/inode.c b/drivers/usb/core/inode.c index b690aa35df9a..e3ab4437ea96 100644 --- a/drivers/usb/core/inode.c +++ b/drivers/usb/core/inode.c @@ -347,10 +347,13 @@ static int usbfs_empty (struct dentry *dentry) list_for_each(list, &dentry->d_subdirs) { struct dentry *de = list_entry(list, struct dentry, d_u.d_child); + spin_lock(&de->d_lock); if (usbfs_positive(de)) { + spin_unlock(&de->d_lock); spin_unlock(&dcache_lock); return 0; } + spin_unlock(&de->d_lock); } spin_unlock(&dcache_lock); |