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ext4: Fix s_dirty_blocks_counter if block allocation failed with nodelalloc

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With nodelalloc option we need to update the dirty block counter on
block allocation failure. This is needed because we increment the
dirty block counter early in the block allocation phase. Without
the patch s_dirty_blocks_counter goes wrong so that filesystem's
free blocks decreases incorrectly.

Tested-by: Akira Fujita <a-fujita@rs.jp.nec.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@kernel.org
This commit is contained in:
Aneesh Kumar K.V 2009-01-05 21:49:12 -05:00 committed by Theodore Ts'o
parent 29eaf02498
commit 0087d9fb3f
1 changed files with 8 additions and 1 deletions
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9
fs/ext4/mballoc.c
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@ -4541,7 +4541,7 @@ ext4_fsblk_t ext4_mb_new_blocks(handle_t *handle,
}
if (ar->len == 0) {
*errp = -EDQUOT;
return 0;
goto out3;
}
inquota = ar->len;
@ -4614,6 +4614,13 @@ ext4_fsblk_t ext4_mb_new_blocks(handle_t *handle,
out1:
if (ar->len < inquota)
DQUOT_FREE_BLOCK(ar->inode, inquota - ar->len);
out3:
if (!ar->len) {
if (!EXT4_I(ar->inode)->i_delalloc_reserved_flag)
/* release all the reserved blocks if non delalloc */
percpu_counter_sub(&sbi->s_dirtyblocks_counter,
reserv_blks);
}
return block;
}