diff options
| author | Jiri Kosina <jkosina@suse.cz> | 2010-12-10 15:19:18 +0100 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2010-12-10 15:19:18 +0100 |
| commit | 2ade0c1d9d93b7642212657ef76f4a1e30233711 (patch) | |
| tree | 63bc720c0ffe5f4760cac4ed617b9870b050175e /fs/coda/cache.c | |
| parent | 504499f22c08a03e2e19dc88d31aa0ecd2ac815e (diff) | |
| parent | 6313e3c21743cc88bb5bd8aa72948ee1e83937b6 (diff) | |
Merge branch 'master' into upstream
Diffstat (limited to 'fs/coda/cache.c')
| -rw-r--r-- | fs/coda/cache.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/fs/coda/cache.c b/fs/coda/cache.c index a5bf5771a22a..9060f08e70cf 100644 --- a/fs/coda/cache.c +++ b/fs/coda/cache.c @@ -17,6 +17,7 @@ #include <linux/string.h> #include <linux/list.h> #include <linux/sched.h> +#include <linux/spinlock.h> #include <linux/coda.h> #include <linux/coda_linux.h> @@ -31,19 +32,23 @@ void coda_cache_enter(struct inode *inode, int mask) { struct coda_inode_info *cii = ITOC(inode); + spin_lock(&cii->c_lock); cii->c_cached_epoch = atomic_read(&permission_epoch); if (cii->c_uid != current_fsuid()) { cii->c_uid = current_fsuid(); cii->c_cached_perm = mask; } else cii->c_cached_perm |= mask; + spin_unlock(&cii->c_lock); } /* remove cached acl from an inode */ void coda_cache_clear_inode(struct inode *inode) { struct coda_inode_info *cii = ITOC(inode); + spin_lock(&cii->c_lock); cii->c_cached_epoch = atomic_read(&permission_epoch) - 1; + spin_unlock(&cii->c_lock); } /* remove all acl caches */ @@ -57,13 +62,15 @@ void coda_cache_clear_all(struct super_block *sb) int coda_cache_check(struct inode *inode, int mask) { struct coda_inode_info *cii = ITOC(inode); - int hit; + int hit; - hit = (mask & cii->c_cached_perm) == mask && - cii->c_uid == current_fsuid() && - cii->c_cached_epoch == atomic_read(&permission_epoch); + spin_lock(&cii->c_lock); + hit = (mask & cii->c_cached_perm) == mask && + cii->c_uid == current_fsuid() && + cii->c_cached_epoch == atomic_read(&permission_epoch); + spin_unlock(&cii->c_lock); - return hit; + return hit; } |