diff options
| author | Theodore Ts'o <tytso@mit.edu> | 2018-09-03 22:25:01 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-29 03:07:34 -0700 |
| commit | 4ba9e687ed89fd2a3fe6a3d7e95daea8669edb94 (patch) | |
| tree | 90ae69dabe77312d3ddd45256752e2ad3675111b | |
| parent | 205dc0da96dffe78c6684a37ee0b574c929f5155 (diff) | |
ext4: fix online resizing for bigalloc file systems with a 1k block size
commit 5f8c10936fab2b69a487400f2872902e597dd320 upstream.
An online resize of a file system with the bigalloc feature enabled
and a 1k block size would be refused since ext4_resize_begin() did not
understand s_first_data_block is 0 for all bigalloc file systems, even
when the block size is 1k.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | fs/ext4/resize.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c index 5b56aa6c13f2..1da301ee78ce 100644 --- a/fs/ext4/resize.c +++ b/fs/ext4/resize.c @@ -18,6 +18,7 @@ int ext4_resize_begin(struct super_block *sb) { + struct ext4_sb_info *sbi = EXT4_SB(sb); int ret = 0; if (!capable(CAP_SYS_RESOURCE)) @@ -28,7 +29,7 @@ int ext4_resize_begin(struct super_block *sb) * because the user tools have no way of handling this. Probably a * bad time to do it anyways. */ - if (EXT4_SB(sb)->s_sbh->b_blocknr != + if (EXT4_B2C(sbi, sbi->s_sbh->b_blocknr) != le32_to_cpu(EXT4_SB(sb)->s_es->s_first_data_block)) { ext4_warning(sb, "won't resize using backup superblock at %llu", (unsigned long long)EXT4_SB(sb)->s_sbh->b_blocknr); |