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ext4: make sure ext4_has_free_blocks returns 0 for ENOSPC

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Fix ext4_has_free_blocks() to return 0 when we don't have enough space.

Signed-off-by: Aneesh Kumar K.V <[email protected]>
Signed-off-by: Mingming Cao <[email protected]>
Signed-off-by: "Theodore Ts'o" <[email protected]>
This commit is contained in:
Aneesh Kumar K.V 2008-08-19 21:16:54 -04:00 • committed by Theodore Ts'o
commit 16eb729564
1 changed files with 3 additions and 0 deletions
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3
fs/ext4/balloc.c
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@ -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;