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ext3: Adjust trim start with first_data_block.

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As we have make the consense in the e-mail[1], the trim start should
be added with first_data_block. So this patch fulfill it and remove
the check for start < first_data_block.

[1] http://www.spinics.net/lists/linux-ext4/msg22737.html

Cc: Jan Kara <jack@suse.cz>
Cc: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Tao Ma <boyu.mt@taobao.com>
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Tao Ma 2011-01-21 10:52:56 +08:00 committed by Jan Kara
parent 7a39de1510
commit 4b44dd300d
1 changed files with 2 additions and 5 deletions
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7
fs/ext3/balloc.c
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@ -2090,7 +2090,8 @@ int ext3_trim_fs(struct super_block *sb, struct fstrim_range *range)
ext3_fsblk_t max_blks = le32_to_cpu(es->s_blocks_count);
int ret = 0;
start = range->start >> sb->s_blocksize_bits;
start = (range->start >> sb->s_blocksize_bits) +
le32_to_cpu(es->s_first_data_block);
len = range->len >> sb->s_blocksize_bits;
minlen = range->minlen >> sb->s_blocksize_bits;
trimmed = 0;
@ -2099,10 +2100,6 @@ int ext3_trim_fs(struct super_block *sb, struct fstrim_range *range)
return -EINVAL;
if (start >= max_blks)
goto out;
if (start < le32_to_cpu(es->s_first_data_block)) {
len -= le32_to_cpu(es->s_first_data_block) - start;
start = le32_to_cpu(es->s_first_data_block);
}
if (start + len > max_blks)
len = max_blks - start;