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ext3: Don't call dquot_free_block() if we don't update anything

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dquot_free_block() is called in the end of ext3_new_blocks() and updates
information of the inode structure. However, this update is not necessary
if the number of blocks we requested is equal to the number of
allocated blocks.

Signed-off-by: Kazuya Mio <k-mio@sx.jp.nec.com>
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Kazuya Mio 2012-01-30 17:41:25 +09:00 committed by Jan Kara
parent 75b09e022f
commit 053800a84b
1 changed files with 5 additions and 2 deletions
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7
fs/ext3/balloc.c
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@ -1743,8 +1743,11 @@ allocated:
*errp = 0;
brelse(bitmap_bh);
dquot_free_block(inode, *count-num);
*count = num;
if (num < *count) {
dquot_free_block(inode, *count-num);
*count = num;
}
trace_ext3_allocate_blocks(inode, goal, num,
(unsigned long long)ret_block);