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Switch KM_SLEEP to KM_PUSHPAGE

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This warning indicates the incorrect use of KM_SLEEP in a call
path which must use KM_PUSHPAGE to avoid deadlocking in direct
reclaim.  See commit b8d06fca08
for additional details.

  SPL: Fixing allocation for task txg_sync (6093) which
  used GFP flags 0x297bda7c with PF_NOFS set

Signed-off-by: Chris Dunlop <chris@onthe.net.au>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #917
This commit is contained in:
Chris Dunlop 2012-09-01 14:44:13 +10:00 committed by Brian Behlendorf
parent b404a3f07f
commit 20a083cbe2
2 changed files with 6 additions and 6 deletions
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10
module/zfs/dsl_scan.c
View File

@ -212,7 +212,7 @@ dsl_scan_setup_sync(void *arg1, void *arg2, dmu_tx_t *tx)
if (dp->dp_blkstats == NULL) {
dp->dp_blkstats = kmem_alloc(sizeof (zfs_all_blkstats_t),
KM_SLEEP | KM_NODEBUG);
KM_PUSHPAGE | KM_NODEBUG);
}
bzero(dp->dp_blkstats, sizeof (zfs_all_blkstats_t));
@ -793,7 +793,7 @@ dsl_scan_visitbp(blkptr_t *bp, const zbookmark_t *zb,
arc_buf_t *buf = NULL;
blkptr_t *bp_toread;
bp_toread = kmem_alloc(sizeof (blkptr_t), KM_SLEEP);
bp_toread = kmem_alloc(sizeof (blkptr_t), KM_PUSHPAGE);
*bp_toread = *bp;
/* ASSERT(pbuf == NULL || arc_released(pbuf)); */
@ -1110,7 +1110,7 @@ dsl_scan_visitds(dsl_scan_t *scn, uint64_t dsobj, dmu_tx_t *tx)
dmu_buf_will_dirty(ds->ds_dbuf, tx);
dsl_scan_visit_rootbp(scn, ds, &ds->ds_phys->ds_bp, tx);
dsname = kmem_alloc(ZFS_MAXNAMELEN, KM_SLEEP);
dsname = kmem_alloc(ZFS_MAXNAMELEN, KM_PUSHPAGE);
dsl_dataset_name(ds, dsname);
zfs_dbgmsg("scanned dataset %llu (%s) with min=%llu max=%llu; "
"pausing=%u",
@ -1377,8 +1377,8 @@ dsl_scan_visit(dsl_scan_t *scn, dmu_tx_t *tx)
* bookmark so we don't think that we're still trying to resume.
*/
bzero(&scn->scn_phys.scn_bookmark, sizeof (zbookmark_t));
zc = kmem_alloc(sizeof(zap_cursor_t), KM_SLEEP);
za = kmem_alloc(sizeof(zap_attribute_t), KM_SLEEP);
zc = kmem_alloc(sizeof(zap_cursor_t), KM_PUSHPAGE);
za = kmem_alloc(sizeof(zap_attribute_t), KM_PUSHPAGE);
/* keep pulling things out of the zap-object-as-queue */
while (zap_cursor_init(zc, dp->dp_meta_objset,

2
module/zfs/fm.c
View File

@ -418,7 +418,7 @@ zfs_zevent_alloc(void)
{
zevent_t *ev;
ev = kmem_zalloc(sizeof(zevent_t), KM_SLEEP);
ev = kmem_zalloc(sizeof(zevent_t), KM_PUSHPAGE);
if (ev == NULL)
return NULL;