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| author | Theodore Ts'o <tytso@mit.edu> | 2018-09-03 22:25:01 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2018-09-03 22:25:01 -0400 |
| commit | 5f8c10936fab2b69a487400f2872902e597dd320 (patch) | |
| tree | 239d1e7028b09e26dcbc03dd7f70a7c29d751a28 /fs | |
| parent | f0a459dec5495a3580f8d784555e6f8f3bf7f263 (diff) | |
| download | linux-5f8c10936fab2b69a487400f2872902e597dd320.tar.gz | |
ext4: fix online resizing for bigalloc file systems with a 1k block size
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
Diffstat (limited to 'fs')
| -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 33655a6eff4d..ebbc663d0798 100644 --- a/fs/ext4/resize.c +++ b/fs/ext4/resize.c @@ -19,6 +19,7 @@ int ext4_resize_begin(struct super_block *sb) { + struct ext4_sb_info *sbi = EXT4_SB(sb); int ret = 0; if (!capable(CAP_SYS_RESOURCE)) @@ -29,7 +30,7 @@ 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); |