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authorTao Ma <boyu.mt@taobao.com>2011-01-21 05:52:56 +0300
committerJan Kara <jack@suse.cz>2011-02-24 13:42:45 +0300
commit4b44dd300d5bfd500f170bae13f95f589de0b28f (patch)
tree2add4705a56c0fc665029baa122e466359c56eb2 /fs/ext3/balloc.c
parent7a39de1510a3fd07a77530440292735d305fe510 (diff)
downloadlinux-4b44dd300d5bfd500f170bae13f95f589de0b28f.tar.xz
ext3: Adjust trim start with first_data_block.
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>
Diffstat (limited to 'fs/ext3/balloc.c')
-rw-r--r--fs/ext3/balloc.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/fs/ext3/balloc.c b/fs/ext3/balloc.c
index 045995c8ce5a..5b8344fab79d 100644
--- a/fs/ext3/balloc.c
+++ b/fs/ext3/balloc.c
@@ -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;