From bbd6851a3213a525128473e978b692ab6ac11aba Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 6 May 2009 10:43:07 -0400 Subject: Push lock_super() into the ->remount_fs() of filesystems that care about it Note that since we can't run into contention between remount_fs and write_super (due to exclusion on s_umount), we have to care only about filesystems that touch lock_super() on their own. Out of those ext3, ext4, hpfs, sysv and ufs do need it; fat doesn't since its ->remount_fs() only accesses assign-once data (basically, it's "we have no atime on directories and only have atime on files for vfat; force nodiratime and possibly noatime into *flags"). [folded a build fix from hch] Signed-off-by: Al Viro --- fs/ext4/super.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'fs/ext4') diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 1d4180b8677..a9c68342592 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -3421,6 +3421,7 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data) #endif /* Store the original options */ + lock_super(sb); old_sb_flags = sb->s_flags; old_opts.s_mount_opt = sbi->s_mount_opt; old_opts.s_resuid = sbi->s_resuid; @@ -3554,6 +3555,7 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data) old_opts.s_qf_names[i] != sbi->s_qf_names[i]) kfree(old_opts.s_qf_names[i]); #endif + unlock_super(sb); return 0; restore_opts: @@ -3573,6 +3575,7 @@ restore_opts: sbi->s_qf_names[i] = old_opts.s_qf_names[i]; } #endif + unlock_super(sb); return err; } -- cgit v1.2.3-18-g5258