diff options
| author | Mike Snitzer <snitzer@redhat.com> | 2011-11-23 10:59:13 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2012-01-06 14:13:48 -0800 |
| commit | d27bf91d1a9ea58a32bf9dd949e93bb1dc1fc9bf (patch) | |
| tree | 3b71c18560ce6e675525c0d0899f542fabaa72a4 /block | |
| parent | afa2450ce311b3182c737c3fda59bb557da93409 (diff) | |
block: initialize request_queue's numa node during
commit 5151412dd4338b273afdb107c3772528e9e67d92 upstream.
struct request_queue is allocated with __GFP_ZERO so its "node" field is
zero before initialization. This causes an oops if node 0 is offline in
the page allocator because its zonelists are not initialized. From Dave
Young's dmesg:
SRAT: Node 1 PXM 2 0-d0000000
SRAT: Node 1 PXM 2 100000000-330000000
SRAT: Node 0 PXM 1 330000000-630000000
Initmem setup node 1 0000000000000000-000000000affb000
...
Built 1 zonelists in Node order, mobility grouping on.
...
BUG: unable to handle kernel paging request at 0000000000001c08
IP: [<ffffffff8111c355>] __alloc_pages_nodemask+0xb5/0x870
and __alloc_pages_nodemask+0xb5 translates to a NULL pointer on
zonelist->_zonerefs.
The fix is to initialize q->node at the time of allocation so the correct
node is passed to the slab allocator later.
Since blk_init_allocated_queue_node() is no longer needed, merge it with
blk_init_allocated_queue().
[rientjes@google.com: changelog, initializing q->node]
Reported-by: Dave Young <dyoung@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: David Rientjes <rientjes@google.com>
Tested-by: Dave Young <dyoung@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-core.c | 14 |
1 files changed, 3 insertions, 11 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index 847d04ef9f19..35ae52df6b6d 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -418,6 +418,7 @@ struct request_queue *blk_alloc_queue_node(gfp_t gfp_mask, int node_id) q->backing_dev_info.state = 0; q->backing_dev_info.capabilities = BDI_CAP_MAP_COPY; q->backing_dev_info.name = "block"; + q->node = node_id; err = bdi_init(&q->backing_dev_info); if (err) { @@ -502,7 +503,7 @@ blk_init_queue_node(request_fn_proc *rfn, spinlock_t *lock, int node_id) if (!uninit_q) return NULL; - q = blk_init_allocated_queue_node(uninit_q, rfn, lock, node_id); + q = blk_init_allocated_queue(uninit_q, rfn, lock); if (!q) blk_cleanup_queue(uninit_q); @@ -514,18 +515,9 @@ struct request_queue * blk_init_allocated_queue(struct request_queue *q, request_fn_proc *rfn, spinlock_t *lock) { - return blk_init_allocated_queue_node(q, rfn, lock, -1); -} -EXPORT_SYMBOL(blk_init_allocated_queue); - -struct request_queue * -blk_init_allocated_queue_node(struct request_queue *q, request_fn_proc *rfn, - spinlock_t *lock, int node_id) -{ if (!q) return NULL; - q->node = node_id; if (blk_init_free_list(q)) return NULL; @@ -555,7 +547,7 @@ blk_init_allocated_queue_node(struct request_queue *q, request_fn_proc *rfn, return NULL; } -EXPORT_SYMBOL(blk_init_allocated_queue_node); +EXPORT_SYMBOL(blk_init_allocated_queue); int blk_get_queue(struct request_queue *q) { |