This is a note to let you know that I've just added the patch titled
bcache: Make sure to pass GFP_WAIT to mempool_alloc()
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
bcache-make-sure-to-pass-gfp_wait-to-mempool_alloc.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From bcf090e0040e30f8409e6a535a01e6473afb096f Mon Sep 17 00:00:00 2001
From: Kent Overstreet <kmo@xxxxxxxxxxxxx>
Date: Mon, 19 May 2014 08:57:55 -0700
Subject: bcache: Make sure to pass GFP_WAIT to mempool_alloc()
From: Kent Overstreet <kmo@xxxxxxxxxxxxx>
commit bcf090e0040e30f8409e6a535a01e6473afb096f upstream.
this was very wrong - mempool_alloc() only guarantees success with GFP_WAIT.
bcache uses GFP_NOWAIT in various other places where we have a fallback,
circuits must've gotten crossed when writing this code or something.
Signed-off-by: Kent Overstreet <kmo@xxxxxxxxxxxxx>
Cc: Gabriel de Perthuis <g2p.code@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/md/bcache/btree.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/md/bcache/btree.c
+++ b/drivers/md/bcache/btree.c
@@ -199,7 +199,7 @@ void bch_btree_node_read_done(struct btr
struct bset *i = btree_bset_first(b);
struct btree_iter *iter;
- iter = mempool_alloc(b->c->fill_iter, GFP_NOWAIT);
+ iter = mempool_alloc(b->c->fill_iter, GFP_NOIO);
iter->size = b->c->sb.bucket_size / b->c->sb.block_size;
iter->used = 0;
Patches currently in stable-queue which might be from kmo@xxxxxxxxxxxxx are
queue-3.14/bcache-make-sure-to-pass-gfp_wait-to-mempool_alloc.patch
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