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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: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #973
This commit is contained in:
Brian Behlendorf 2012-09-19 11:50:22 -07:00
parent 0a2f7b3662
commit 95fd8c9a7f
1 changed files with 3 additions and 3 deletions
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6
module/zfs/ddt.c
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@ -653,7 +653,7 @@ ddt_alloc(const ddt_key_t *ddk)
ddt_entry_t *dde;
/* XXX: Move to a slab */
dde = kmem_zalloc(sizeof (ddt_entry_t), KM_SLEEP);
dde = kmem_zalloc(sizeof (ddt_entry_t), KM_PUSHPAGE);
cv_init(&dde->dde_cv, NULL, CV_DEFAULT, NULL);
dde->dde_key = *ddk;
@ -802,7 +802,7 @@ ddt_table_alloc(spa_t *spa, enum zio_checksum c)
ddt_t *ddt;
/* XXX: Move to a slab */
ddt = kmem_zalloc(sizeof (*ddt), KM_SLEEP | KM_NODEBUG);
ddt = kmem_zalloc(sizeof (*ddt), KM_PUSHPAGE | KM_NODEBUG);
mutex_init(&ddt->ddt_lock, NULL, MUTEX_DEFAULT, NULL);
avl_create(&ddt->ddt_tree, ddt_entry_compare,
@ -904,7 +904,7 @@ ddt_class_contains(spa_t *spa, enum ddt_class max_class, const blkptr_t *bp)
return (B_TRUE);
ddt = spa->spa_ddt[BP_GET_CHECKSUM(bp)];
dde = kmem_alloc(sizeof(ddt_entry_t), KM_SLEEP);
dde = kmem_alloc(sizeof(ddt_entry_t), KM_PUSHPAGE);
ddt_key_fill(&(dde->dde_key), bp);