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authorIngo Molnar <mingo@kernel.org>2012-07-25 21:40:40 +0200
committerIngo Molnar <mingo@kernel.org>2012-07-25 21:40:40 +0200
commitd431adfbc9b7de651f3164c6b7ffcad75805d7e4 (patch)
tree29bce222c81a3a392e51c11e2188659aa6d1bded /fs/xfs/xfs_alloc.c
parentd6250a3f12edb3a86db9598ffeca3de8b4a219e9 (diff)
parente2b34e311be3a57c9abcb927e37a57e38913714c (diff)
Merge branch 'linus' into x86/urgent
Merge in Linus's tree to avoid a conflict. Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'fs/xfs/xfs_alloc.c')
-rw-r--r--fs/xfs/xfs_alloc.c19
1 files changed, 14 insertions, 5 deletions
diff --git a/fs/xfs/xfs_alloc.c b/fs/xfs/xfs_alloc.c
index 9d1aeb7e2734..4f33c32affe3 100644
--- a/fs/xfs/xfs_alloc.c
+++ b/fs/xfs/xfs_alloc.c
@@ -1074,13 +1074,13 @@ restart:
* If we couldn't get anything, give up.
*/
if (bno_cur_lt == NULL && bno_cur_gt == NULL) {
+ xfs_btree_del_cursor(cnt_cur, XFS_BTREE_NOERROR);
+
if (!forced++) {
trace_xfs_alloc_near_busy(args);
xfs_log_force(args->mp, XFS_LOG_SYNC);
goto restart;
}
-
- xfs_btree_del_cursor(cnt_cur, XFS_BTREE_NOERROR);
trace_xfs_alloc_size_neither(args);
args->agbno = NULLAGBLOCK;
return 0;
@@ -2434,13 +2434,22 @@ xfs_alloc_vextent_worker(
current_restore_flags_nested(&pflags, PF_FSTRANS);
}
-
-int /* error */
+/*
+ * Data allocation requests often come in with little stack to work on. Push
+ * them off to a worker thread so there is lots of stack to use. Metadata
+ * requests, OTOH, are generally from low stack usage paths, so avoid the
+ * context switch overhead here.
+ */
+int
xfs_alloc_vextent(
- xfs_alloc_arg_t *args) /* allocation argument structure */
+ struct xfs_alloc_arg *args)
{
DECLARE_COMPLETION_ONSTACK(done);
+ if (!args->userdata)
+ return __xfs_alloc_vextent(args);
+
+
args->done = &done;
INIT_WORK_ONSTACK(&args->work, xfs_alloc_vextent_worker);
queue_work(xfs_alloc_wq, &args->work);