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Subject[PATCH 7/12] ext4 balloc: reset windowsz when full
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Date

------------------------------------------------------
Subject: ext2 balloc: reset windowsz when full
From: Hugh Dickins <hugh@veritas.com>
ext2_new_blocks should reset the reservation window size to 0 when squeezing
the last blocks out of an almost full filesystem, so the retry doesn't skip
any groups with less than half that free, reporting ENOSPC too soon.

------------------------------------------------------
Sync up reservation fix from ext2 in ext4
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
---

---
linux-2.6.19-rc5-cmm/fs/ext4/balloc.c | 1 +
1 file changed, 1 insertion(+)
diff -puN fs/ext4/balloc.c~ext4_reset_windowsz_in_full_fs fs/ext4/balloc.c
--- linux-2.6.19-rc5/fs/ext4/balloc.c~ext4_reset_windowsz_in_full_fs 2006-11-28 19:37:01.000000000 -0800
+++ linux-2.6.19-rc5-cmm/fs/ext4/balloc.c 2006-11-28 19:37:01.000000000 -0800
@@ -1566,6 +1566,7 @@ retry_alloc:
*/
if (my_rsv) {
my_rsv = NULL;
+ windowsz = 0;
group_no = goal_group;
goto retry_alloc;
}
_


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