diff options
| author | Ingo Molnar <mingo@elte.hu> | 2009-01-02 22:41:36 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-01-02 22:41:36 +0100 |
| commit | 923a789b49c7269a0245d5af6afe486188d940df (patch) | |
| tree | c3f168427372e64f7467a794f313416da5086ba0 /fs/dcookies.c | |
| parent | 103ceffb9501531f6931df6aebc11a05189201f0 (diff) | |
| parent | b840d79631c882786925303c2b0f4fefc31845ed (diff) | |
Merge branch 'linus' into x86/cleanups
Conflicts:
arch/x86/kernel/reboot.c
Diffstat (limited to 'fs/dcookies.c')
| -rw-r--r-- | fs/dcookies.c | 28 |
1 files changed, 19 insertions, 9 deletions
diff --git a/fs/dcookies.c b/fs/dcookies.c index 855d4b1d619..180e9fec4ad 100644 --- a/fs/dcookies.c +++ b/fs/dcookies.c @@ -93,10 +93,15 @@ static struct dcookie_struct *alloc_dcookie(struct path *path) { struct dcookie_struct *dcs = kmem_cache_alloc(dcookie_cache, GFP_KERNEL); + struct dentry *d; if (!dcs) return NULL; - path->dentry->d_cookie = dcs; + d = path->dentry; + spin_lock(&d->d_lock); + d->d_flags |= DCACHE_COOKIE; + spin_unlock(&d->d_lock); + dcs->path = *path; path_get(path); hash_dcookie(dcs); @@ -119,14 +124,14 @@ int get_dcookie(struct path *path, unsigned long *cookie) goto out; } - dcs = path->dentry->d_cookie; - - if (!dcs) + if (path->dentry->d_flags & DCACHE_COOKIE) { + dcs = find_dcookie((unsigned long)path->dentry); + } else { dcs = alloc_dcookie(path); - - if (!dcs) { - err = -ENOMEM; - goto out; + if (!dcs) { + err = -ENOMEM; + goto out; + } } *cookie = dcookie_value(dcs); @@ -251,7 +256,12 @@ out_kmem: static void free_dcookie(struct dcookie_struct * dcs) { - dcs->path.dentry->d_cookie = NULL; + struct dentry *d = dcs->path.dentry; + + spin_lock(&d->d_lock); + d->d_flags &= ~DCACHE_COOKIE; + spin_unlock(&d->d_lock); + path_put(&dcs->path); kmem_cache_free(dcookie_cache, dcs); } |