From: Chris Horn <hornc@cray.com>
Date: Mon, 27 Jul 2015 20:03:42 +0000 (-0400)
Subject: LU-6261 gnilnd: Use kgnilnd_vzalloc to allocate fma blocks.
X-Git-Tag: 2.7.58~52
X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=commitdiff_plain;h=c6b0d0e779c18809d1ef9a6e352349107c7e68d8

LU-6261 gnilnd: Use kgnilnd_vzalloc to allocate fma blocks.

In low memory situations we may not be able to allocate memory.
vmalloc tries forever to get memory.
Use kgnilnd_vzalloc which uses the GFP_NOFS flag for allocating
memory for fma blocks.

Signed-off-by: Chris Horn <hornc@cray.com>
Change-Id: I18f8564424abfc9c63e675ac98ca61487b5a2b34
Reviewed-on: http://review.whamcloud.com/15438
Tested-by: Jenkins
Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Doug Oucharek <doug.s.oucharek@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
---

diff --git a/lnet/klnds/gnilnd/gnilnd_conn.c b/lnet/klnds/gnilnd/gnilnd_conn.c
index 4ca4542..408ca65 100644
--- a/lnet/klnds/gnilnd/gnilnd_conn.c
+++ b/lnet/klnds/gnilnd/gnilnd_conn.c
@@ -166,7 +166,7 @@ kgnilnd_alloc_fmablk(kgn_device_t *device, int use_phys)
 			 num_mbox, fma_blk->gnm_blk_size, fma_blk->gnm_mbox_size,
 			 *kgnilnd_tunables.kgn_mbox_per_block);
 
-		LIBCFS_ALLOC(fma_blk->gnm_block, fma_blk->gnm_blk_size);
+		fma_blk->gnm_block = kgnilnd_vzalloc(fma_blk->gnm_blk_size);
 		if (fma_blk->gnm_block == NULL) {
 			CNETERR("could not allocate virtual SMSG mailbox memory, %d bytes\n", fma_blk->gnm_blk_size);
 			rc = -ENOMEM;