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quota: move remount handling into the filesystem

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Currently do_remount_sb calls into the dquot code to tell it about going
from rw to ro and ro to rw.  Move this code into the filesystem to
not depend on the dquot code in the VFS - note ocfs2 already ignores
these calls and handles remount by itself.  This gets rid of overloading
the quotactl calls and allows to unify the VFS and XFS codepaths in
that area later.

Signed-off-by: Christoph Hellwig <[email protected]>
Signed-off-by: Jan Kara <[email protected]>
This commit is contained in:
Christoph Hellwig 2010-05-19 07:16:40 -04:00 • committed by Jan Kara
commit c79d967de3
8 changed files with 84 additions and 14 deletions
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10
fs/jfs/super.c
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@ -396,10 +396,20 @@ static int jfs_remount(struct super_block *sb, int *flags, char *data)
JFS_SBI(sb)->flag = flag;
ret = jfs_mount_rw(sb, 1);
/* mark the fs r/w for quota activity */
sb->s_flags &= ~MS_RDONLY;
unlock_kernel();
vfs_dq_quota_on_remount(sb);
return ret;
}
if ((!(sb->s_flags & MS_RDONLY)) && (*flags & MS_RDONLY)) {
rc = vfs_dq_off(sb, 1);
if (rc < 0 && rc != -ENOSYS) {
unlock_kernel();
return -EBUSY;
}
rc = jfs_umount_rw(sb);
JFS_SBI(sb)->flag = flag;
unlock_kernel();