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ext4: make sure ext4_has_free_blocks returns 0 for ENOSPC
author
Aneesh Kumar K.V
<aneesh.kumar@linux.vnet.ibm.com>
Wed, 20 Aug 2008 01:16:54 +0000
(21:16 -0400)
committer
Theodore Ts'o
<tytso@mit.edu>
Wed, 20 Aug 2008 01:16:54 +0000
(21:16 -0400)
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>
fs/ext4/balloc.c
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diff --git
a/fs/ext4/balloc.c
b/fs/ext4/balloc.c
index 1ae5004e93fc20ffd99a652efa6be9897a0518c1..e9fa960ba6da9fa6cf573fc517d70808e519ab83 100644
(file)
--- 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;