2.6.37-stable review patch. If anyone has any objections, please let us know.
------------------ From: Jan Kara <[email protected]> commit ca6e909f9bebe709bc65a3ee605ce32969db0452 upstream. 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 <[email protected]> Signed-off-by: Jan Kara <[email protected]> Signed-off-by: "Theodore Ts'o" <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- fs/ext4/mballoc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -4851,7 +4851,7 @@ int ext4_trim_fs(struct super_block *sb, 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, _______________________________________________ stable mailing list [email protected] http://linux.kernel.org/mailman/listinfo/stable
