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| author | Theodore Ts'o <tytso@mit.edu> | 2011-09-09 18:36:51 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2011-09-09 18:36:51 -0400 |
| commit | bab08ab9646288f1b0b72a7aaeecdff94bd62c18 (patch) | |
| tree | e301377f1ce9093a44b2cfb331439e15d79789ed /fs/ext4/super.c | |
| parent | 281b59959707dfae03ce038cdf231bf4904e170c (diff) | |
| download | linux-bab08ab9646288f1b0b72a7aaeecdff94bd62c18.tar.gz linux-bab08ab9646288f1b0b72a7aaeecdff94bd62c18.tar.bz2 linux-bab08ab9646288f1b0b72a7aaeecdff94bd62c18.zip | |
ext4: enforce bigalloc restrictions (e.g., no online resizing, etc.)
At least initially if the bigalloc feature is enabled, we will not
support non-extent mapped inodes, online resizing, online defrag, or
the FITRIM ioctl. This simplifies the initial implementation.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/super.c')
| -rw-r--r-- | fs/ext4/super.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 823e7d9deee2..25a4bfe3f39f 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -2701,6 +2701,13 @@ static int ext4_feature_set_ok(struct super_block *sb, int readonly) return 0; } } + if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_BIGALLOC) && + !EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_EXTENTS)) { + ext4_msg(sb, KERN_ERR, + "Can't support bigalloc feature without " + "extents feature\n"); + return 0; + } return 1; } |