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| author | Dan Williams <dan.j.williams@intel.com> | 2008-09-26 19:01:20 -0700 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2008-10-23 05:13:23 -0400 |
| commit | 0e55a7cca4b66f625d67b292f80b6a976e77c51b (patch) | |
| tree | 5106fdf23fe0a6030ab00645bf37f19f07aadd45 | |
| parent | 91efc167d02509ea78abeff6d668065964c67c0b (diff) | |
| download | lwn-0e55a7cca4b66f625d67b292f80b6a976e77c51b.tar.gz lwn-0e55a7cca4b66f625d67b292f80b6a976e77c51b.zip | |
[RFC PATCH] touch_mnt_namespace when the mount flags change
Daemons that need to be launched while the rootfs is read-only can now
poll /proc/mounts to be notified when their O_RDWR requests may no
longer end in EROFS.
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Neil Brown <neilb@suse.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
| -rw-r--r-- | fs/namespace.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/namespace.c b/fs/namespace.c index f527a0d6c64d..cce46702d33c 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -1550,8 +1550,13 @@ static int do_remount(struct path *path, int flags, int mnt_flags, if (!err) path->mnt->mnt_flags = mnt_flags; up_write(&sb->s_umount); - if (!err) + if (!err) { security_sb_post_remount(path->mnt, flags, data); + + spin_lock(&vfsmount_lock); + touch_mnt_namespace(path->mnt->mnt_ns); + spin_unlock(&vfsmount_lock); + } return err; } |