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| author | Jan Kara <jack@suse.cz> | 2011-01-10 12:30:39 -0500 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2011-01-10 12:30:39 -0500 |
| commit | ca6e909f9bebe709bc65a3ee605ce32969db0452 (patch) | |
| tree | db7d324b995ff5fe74dcce00c9bf8c4da3adc5e3 /fs/ext4/mballoc.c | |
| parent | 6c5a6cb998854f3c579ecb2bc1423d302bcb1b76 (diff) | |
| download | blackbird-op-linux-ca6e909f9bebe709bc65a3ee605ce32969db0452.tar.gz blackbird-op-linux-ca6e909f9bebe709bc65a3ee605ce32969db0452.zip | |
ext4: fix trimming of a single group
When ext4_trim_fs() is called to trim a part of a single group, the
logic will wrongly set last block of the interval to 'len' instead
of 'first_block + len'. Thus a shorter interval is possibly trimmed.
Fix it.
CC: Lukas Czerner <lczerner@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/mballoc.c')
| -rw-r--r-- | fs/ext4/mballoc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index d47a80ec231d..21ee30b86de5 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -4860,7 +4860,7 @@ int ext4_trim_fs(struct super_block *sb, struct fstrim_range *range) if (len >= EXT4_BLOCKS_PER_GROUP(sb)) len -= (EXT4_BLOCKS_PER_GROUP(sb) - first_block); else - last_block = len; + last_block = first_block + len; if (e4b.bd_info->bb_free >= minlen) { cnt = ext4_trim_all_free(sb, &e4b, first_block, |
