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authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>2008-08-20 03:16:54 +0200
committerTheodore Ts'o <tytso@mit.edu>2008-08-20 03:16:54 +0200
commit16eb72956496594d023a7d7cd14a86404ad195ad (patch)
tree1fed199d788b33be4b329a58e5b6946f41ee6a20
parentext4: journal credit fix for the delayed allocation's writepages() function (diff)
downloadlinux-16eb72956496594d023a7d7cd14a86404ad195ad.tar.xz
linux-16eb72956496594d023a7d7cd14a86404ad195ad.zip
ext4: make sure ext4_has_free_blocks returns 0 for ENOSPC
Fix ext4_has_free_blocks() to return 0 when we don't have enough space. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
-rw-r--r--fs/ext4/balloc.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index 1ae5004e93fc..e9fa960ba6da 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -1626,6 +1626,9 @@ ext4_fsblk_t ext4_has_free_blocks(struct ext4_sb_info *sbi,
free_blocks =
percpu_counter_sum_and_set(&sbi->s_freeblocks_counter);
#endif
+ if (free_blocks <= root_blocks)
+ /* we don't have free space */
+ return 0;
if (free_blocks - root_blocks < nblocks)
return free_blocks - root_blocks;
return nblocks;