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authorChristoph Hellwig <hch@lst.de>2006-01-09 20:52:17 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-10 08:01:34 -0800
commitfc33a7bb9c6dd8f6e4a014976200f8fdabb3a45c (patch)
tree26f4d676de476075545e58057aa5d8c57618741d /include/linux/mount.h
parent0d456fa4261f43433287a10fe3ec04a9818fac64 (diff)
downloadop-kernel-dev-fc33a7bb9c6dd8f6e4a014976200f8fdabb3a45c.zip
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[PATCH] per-mountpoint noatime/nodiratime
Turn noatime and nodiratime into per-mount instead of per-sb flags. After all the preparations this is a rather trivial patch. The mount code needs to treat the two options as per-mount instead of per-superblock, and touch_atime needs to be changed to check the new MNT_ flags in addition to the MS_ flags that are kept for filesystems that are always noatime/nodiratime but not user settable anymore. Besides that core code only nfs needed an update because it's leaving atime updates to the server and thus sets the S_NOATIME flag on every inode, but needs to know whether it's a real noatime mount for an getattr optimization. While we're at it I've killed the IS_NOATIME/IS_NODIRATIME macros that were only used by touch_atime. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/mount.h')
-rw-r--r--include/linux/mount.h8
1 files changed, 5 insertions, 3 deletions
diff --git a/include/linux/mount.h b/include/linux/mount.h
index b98a709..b7472ae 100644
--- a/include/linux/mount.h
+++ b/include/linux/mount.h
@@ -20,10 +20,12 @@
#define MNT_NOSUID 0x01
#define MNT_NODEV 0x02
#define MNT_NOEXEC 0x04
-#define MNT_SHARED 0x10 /* if the vfsmount is a shared mount */
-#define MNT_UNBINDABLE 0x20 /* if the vfsmount is a unbindable mount */
+#define MNT_NOATIME 0x08
+#define MNT_NODIRATIME 0x10
-#define MNT_PNODE_MASK (MNT_SHARED | MNT_UNBINDABLE)
+#define MNT_SHARED 0x1000 /* if the vfsmount is a shared mount */
+#define MNT_UNBINDABLE 0x2000 /* if the vfsmount is a unbindable mount */
+#define MNT_PNODE_MASK 0x3000 /* propogation flag mask */
struct vfsmount {
struct list_head mnt_hash;
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