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authorYongqiang Yang <xiaoqiangnk@gmail.com>2012-09-05 09:33:50 +0400
committerTheodore Ts'o <tytso@mit.edu>2012-09-05 09:33:50 +0400
commit01f795f9e0d67adeccc61a8b20c28acb45fa5fd8 (patch)
tree3a253e174e01279eb5040565fb75402d835b0759 /fs/ext4/ioctl.c
parent28623c2f5b0dca3c3ea34fd6108940661352e276 (diff)
downloadlinux-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.c15
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;