[RFC PATCH -v2] ext4: request for blocks with ar.excepted_group = -1

["Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>]

Otherwise we skip group 0 during block allocation.
This cause ENOSPC even if we have free blocks in
group 0. This should be merged with defrag. The
expected_group changes are introduced by defrag patches.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
---
 fs/ext4/balloc.c  |    1 +
 fs/ext4/extents.c |    1 +
 2 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index 4ebe3b6..1a068f5 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -2034,6 +2034,7 @@ static ext4_fsblk_t do_blk_alloc(handle_t *handle, struct inode *inode,
 	ar.goal = goal;
 	ar.len = *count;
 	ar.logical = iblock;
+	ar.excepted_group = -1;
 
 	if (S_ISREG(inode->i_mode) && !(flags & EXT4_META_BLOCK))
 		/* enable in-core preallocation for data block allocation */
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index bf612a7..268e96d 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -2879,6 +2879,7 @@ int ext4_ext_get_blocks(handle_t *handle, struct inode *inode,
 	ar.goal = ext4_ext_find_goal(inode, path, iblock);
 	ar.logical = iblock;
 	ar.len = allocated;
+	ar.excepted_group = -1;
 	if (S_ISREG(inode->i_mode))
 		ar.flags = EXT4_MB_HINT_DATA;
 	else
-- 
1.6.0.1.90.g27a6e