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| author | Al Viro <viro@zeniv.linux.org.uk> | 2006-03-14 15:32:50 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2006-03-18 18:33:54 -0500 |
| commit | b0a6916bcc48f46996d54b8451591a2f2b7b2f64 (patch) | |
| tree | 8b22d7d04a802092928a642628d2ede339a5287a /block | |
| parent | c981ff9f893b9ab229a809f8ad287ae43fc17a64 (diff) | |
| download | lwn-b0a6916bcc48f46996d54b8451591a2f2b7b2f64.tar.gz lwn-b0a6916bcc48f46996d54b8451591a2f2b7b2f64.zip | |
[PATCH] fix cfq hash lookups
If somebody does a hash lookup for cfq_queue while ioprio of an async queue
is elevated, they shouldn't end up stuck with lowered ioprio when we go back.
Fix is to use ->org_ioprio{,class} in hash lookups.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'block')
| -rw-r--r-- | block/cfq-iosched.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index c8dbe38c81c8..37a2a772498c 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -1179,7 +1179,7 @@ __cfq_find_cfq_hash(struct cfq_data *cfqd, unsigned int key, unsigned int prio, hlist_for_each_safe(entry, next, hash_list) { struct cfq_queue *__cfqq = list_entry_qhash(entry); - const unsigned short __p = IOPRIO_PRIO_VALUE(__cfqq->ioprio_class, __cfqq->ioprio); + const unsigned short __p = IOPRIO_PRIO_VALUE(__cfqq->org_ioprio_class, __cfqq->org_ioprio); if (__cfqq->key == key && (__p == prio || prio == CFQ_KEY_ANY)) return __cfqq; |