From: Lokesh Nagappa Jaliminche <lokesh.jaliminche@seagate.com>
Date: Thu, 14 Apr 2016 08:12:01 +0000 (+0530)
Subject: LU-7922 ldiskfs: correction in ext4_kzalloc
X-Git-Tag: 2.8.53~41
X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=commitdiff_plain;h=101e729708289e46fe858a6b7162f779e24dfa5a

LU-7922 ldiskfs: correction in ext4_kzalloc

ext4_kzalloc uses kmalloc instead of kzalloc, this was
introduced by commit 9933fc0. Due to this get_orlov_stats
was not working properly, making orlov allocator completely
random. kmalloc is replaced with kzalloc to get correct
stats.This is corrected in kernel as part of following
commit v3.0-7217-gdb9481c04

Added __GFP_NOWARN to k.alloc calls with v.alloc fallbacks
as per this commit v3.11-rc2-221-g8be04b937.

Seagate-bug-id: MRP-3412
Signed-off-by: Lokesh Nagappa Jaliminche <lokesh.jaliminche@seagate.com>
Change-Id: I15f1a28537cb5e4f32d63527c99508383e12c97f
Reviewed-on: http://review.whamcloud.com/19541
Tested-by: Jenkins
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Yang Sheng <yang.sheng@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
---

diff --git a/ldiskfs/kernel_patches/patches/rhel6.3/ext4-introduce-ext4_kvmalloc-ext4_kzalloc-and-ext4_kvfree.patch b/ldiskfs/kernel_patches/patches/rhel6.3/ext4-introduce-ext4_kvmalloc-ext4_kzalloc-and-ext4_kvfree.patch
index 290b514..6bea919 100644
--- a/ldiskfs/kernel_patches/patches/rhel6.3/ext4-introduce-ext4_kvmalloc-ext4_kzalloc-and-ext4_kvfree.patch
+++ b/ldiskfs/kernel_patches/patches/rhel6.3/ext4-introduce-ext4_kvmalloc-ext4_kzalloc-and-ext4_kvfree.patch
@@ -38,7 +38,7 @@ Signed-off-by: Jeff Mahoney <jeffm@suse.com>
 +{
 +	void *ret;
 +
-+	ret = kmalloc(size, flags);
++	ret = kmalloc(size, flags | __GFP_NOWARN);
 +	if (!ret)
 +		ret = __vmalloc(size, flags, PAGE_KERNEL);
 +	return ret;
@@ -48,7 +48,7 @@ Signed-off-by: Jeff Mahoney <jeffm@suse.com>
 +{
 +	void *ret;
 +
-+	ret = kmalloc(size, flags);
++	ret = kzalloc(size, flags | __GFP_NOWARN);
 +	if (!ret)
 +		ret = __vmalloc(size, flags | __GFP_ZERO, PAGE_KERNEL);
 +	return ret;
diff --git a/ldiskfs/kernel_patches/patches/sles11sp2/ext4-introduce-ext4_kvmalloc-ext4_kzalloc-and-ext4_kvfree.patch b/ldiskfs/kernel_patches/patches/sles11sp2/ext4-introduce-ext4_kvmalloc-ext4_kzalloc-and-ext4_kvfree.patch
index 3da7dac..30cb1e7 100644
--- a/ldiskfs/kernel_patches/patches/sles11sp2/ext4-introduce-ext4_kvmalloc-ext4_kzalloc-and-ext4_kvfree.patch
+++ b/ldiskfs/kernel_patches/patches/sles11sp2/ext4-introduce-ext4_kvmalloc-ext4_kzalloc-and-ext4_kvfree.patch
@@ -42,7 +42,7 @@ index cfe9f39..658f586 100644
 +{
 +	void *ret;
 +
-+	ret = kmalloc(size, flags);
++	ret = kmalloc(size, flags | __GFP_NOWARN);
 +	if (!ret)
 +		ret = __vmalloc(size, flags, PAGE_KERNEL);
 +	return ret;
@@ -52,7 +52,7 @@ index cfe9f39..658f586 100644
 +{
 +	void *ret;
 +
-+	ret = kmalloc(size, flags);
++	ret = kzalloc(size, flags | __GFP_NOWARN);
 +	if (!ret)
 +		ret = __vmalloc(size, flags | __GFP_ZERO, PAGE_KERNEL);
 +	return ret;