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-rw-r--r--fs/afs/volume.c24
1 files changed, 13 insertions, 11 deletions
diff --git a/fs/afs/volume.c b/fs/afs/volume.c
index 4310336b9bb8..249000195f8a 100644
--- a/fs/afs/volume.c
+++ b/fs/afs/volume.c
@@ -266,7 +266,6 @@ static int afs_update_volume_status(struct afs_volume *volume, struct key *key)
}
volume->update_at = ktime_get_real_seconds() + afs_volume_record_life;
- clear_bit(AFS_VOLUME_NEEDS_UPDATE, &volume->flags);
write_unlock(&volume->servers_lock);
ret = 0;
@@ -283,23 +282,25 @@ error:
*/
int afs_check_volume_status(struct afs_volume *volume, struct afs_fs_cursor *fc)
{
- time64_t now = ktime_get_real_seconds();
int ret, retries = 0;
_enter("");
- if (volume->update_at <= now)
- set_bit(AFS_VOLUME_NEEDS_UPDATE, &volume->flags);
-
retry:
- if (!test_bit(AFS_VOLUME_NEEDS_UPDATE, &volume->flags) &&
- !test_bit(AFS_VOLUME_WAIT, &volume->flags)) {
- _leave(" = 0");
- return 0;
- }
-
+ if (test_bit(AFS_VOLUME_WAIT, &volume->flags))
+ goto wait;
+ if (volume->update_at <= ktime_get_real_seconds() ||
+ test_bit(AFS_VOLUME_NEEDS_UPDATE, &volume->flags))
+ goto update;
+ _leave(" = 0");
+ return 0;
+
+update:
if (!test_and_set_bit_lock(AFS_VOLUME_UPDATING, &volume->flags)) {
+ clear_bit(AFS_VOLUME_NEEDS_UPDATE, &volume->flags);
ret = afs_update_volume_status(volume, fc->key);
+ if (ret < 0)
+ set_bit(AFS_VOLUME_NEEDS_UPDATE, &volume->flags);
clear_bit_unlock(AFS_VOLUME_WAIT, &volume->flags);
clear_bit_unlock(AFS_VOLUME_UPDATING, &volume->flags);
wake_up_bit(&volume->flags, AFS_VOLUME_WAIT);
@@ -307,6 +308,7 @@ retry:
return ret;
}
+wait:
if (!test_bit(AFS_VOLUME_WAIT, &volume->flags)) {
_leave(" = 0 [no wait]");
return 0;