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authorDavid S. Miller <davem@sunset.davemloft.net>2007-04-26 20:39:14 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-04-26 20:39:14 -0700
commit39bf09493042200b967cdf2ee6e3f670b7963903 (patch)
tree081f76ef36a7ac43dd756dea1f9201caba7c821b /fs/afs/internal.h
parent68c708fd5e90f6d178c84bb7e641589eb2842319 (diff)
downloadlwn-39bf09493042200b967cdf2ee6e3f670b7963903.tar.gz
lwn-39bf09493042200b967cdf2ee6e3f670b7963903.zip
[AFS]: Eliminate cmpxchg() usage in vlocation code.
cmpxchg() is not available on every processor so can't be used in generic code. Replace with spinlock protection on the ->state changes, wakeups, and wait loops. Add what appears to be a missing wakeup on transition to AFS_VL_VALID state in afs_vlocation_updater(). Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'fs/afs/internal.h')
-rw-r--r--fs/afs/internal.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/afs/internal.h b/fs/afs/internal.h
index 73bfa0b2d99e..6dd3197d1d8d 100644
--- a/fs/afs/internal.h
+++ b/fs/afs/internal.h
@@ -219,7 +219,7 @@ struct afs_vlocation {
struct afs_volume *vols[3]; /* volume access record pointer (index by type) */
wait_queue_head_t waitq; /* status change waitqueue */
time_t update_at; /* time at which record should be updated */
- rwlock_t lock; /* access lock */
+ spinlock_t lock; /* access lock */
afs_vlocation_state_t state; /* volume location state */
unsigned short upd_rej_cnt; /* ENOMEDIUM count during update */
unsigned short upd_busy_cnt; /* EBUSY count during update */