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| author | Theodore Ts'o <tytso@mit.edu> | 2018-09-03 22:25:01 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-29 02:56:02 -0700 |
| commit | 705bcb551648b0f93e6bd196888972df8a043040 (patch) | |
| tree | 7a0a229ed6b448d5b1ea8d647138e212d385be04 /fs | |
| parent | d47e119158ec3b7c5033f7c5d96576cdd682fdbe (diff) | |
| download | linux-stable-705bcb551648b0f93e6bd196888972df8a043040.tar.gz linux-stable-705bcb551648b0f93e6bd196888972df8a043040.tar.bz2 linux-stable-705bcb551648b0f93e6bd196888972df8a043040.zip | |
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>
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); |