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| author | Yongqiang Yang <xiaoqiangnk@gmail.com> | 2012-09-05 09:33:50 +0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2012-09-05 09:33:50 +0400 |
| commit | 01f795f9e0d67adeccc61a8b20c28acb45fa5fd8 (patch) | |
| tree | 3a253e174e01279eb5040565fb75402d835b0759 /fs/ext4/ioctl.c | |
| parent | 28623c2f5b0dca3c3ea34fd6108940661352e276 (diff) | |
| download | linux-01f795f9e0d67adeccc61a8b20c28acb45fa5fd8.tar.xz | |
ext4: add online resizing support for meta_bg and 64-bit file systems
This patch adds support for resizing file systems with the meta_bg and
64bit features.
[ Added a fix by tytso to fix a divide by zero when resizing a
filesystem from 14 TB to 18TB. Also fixed overhead accounting for
meta_bg file systems.]
Signed-off-by: Yongqiang Yang <xiaoqiangnk@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ioctl.c')
| -rw-r--r-- | fs/ext4/ioctl.c | 15 |
1 files changed, 0 insertions, 15 deletions
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index 7f7dad787603..8b84fe28ccaf 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -365,26 +365,11 @@ group_add_out: return -EOPNOTSUPP; } - if (EXT4_HAS_INCOMPAT_FEATURE(sb, - EXT4_FEATURE_INCOMPAT_META_BG)) { - ext4_msg(sb, KERN_ERR, - "Online resizing not (yet) supported with meta_bg"); - return -EOPNOTSUPP; - } - if (copy_from_user(&n_blocks_count, (__u64 __user *)arg, sizeof(__u64))) { return -EFAULT; } - if (n_blocks_count > MAX_32_NUM && - !EXT4_HAS_INCOMPAT_FEATURE(sb, - EXT4_FEATURE_INCOMPAT_64BIT)) { - ext4_msg(sb, KERN_ERR, - "File system only supports 32-bit block numbers"); - return -EOPNOTSUPP; - } - err = ext4_resize_begin(sb); if (err) return err; |