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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 /fs/inode.c
parent0d456fa4261f43433287a10fe3ec04a9818fac64 (diff)
downloadop-kernel-dev-fc33a7bb9c6dd8f6e4a014976200f8fdabb3a45c.zip
op-kernel-dev-fc33a7bb9c6dd8f6e4a014976200f8fdabb3a45c.tar.gz
[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 'fs/inode.c')
-rw-r--r--fs/inode.c17
1 files changed, 13 insertions, 4 deletions
diff --git a/fs/inode.c b/fs/inode.c
index 76980a9..108138d 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -22,6 +22,7 @@
#include <linux/cdev.h>
#include <linux/bootmem.h>
#include <linux/inotify.h>
+#include <linux/mount.h>
/*
* This is needed for the following functions:
@@ -1189,12 +1190,20 @@ void touch_atime(struct vfsmount *mnt, struct dentry *dentry)
struct inode *inode = dentry->d_inode;
struct timespec now;
- /* per-mountpoint checks will go here */
- if (IS_NOATIME(inode))
+ if (IS_RDONLY(inode))
return;
- if (IS_NODIRATIME(inode) && S_ISDIR(inode->i_mode))
+
+ if ((inode->i_flags & S_NOATIME) ||
+ (inode->i_sb->s_flags & MS_NOATIME) ||
+ ((inode->i_sb->s_flags & MS_NODIRATIME) && S_ISDIR(inode->i_mode)))
return;
- if (IS_RDONLY(inode))
+
+ /*
+ * We may have a NULL vfsmount when coming from NFSD
+ */
+ if (mnt &&
+ ((mnt->mnt_flags & MNT_NOATIME) ||
+ ((mnt->mnt_flags & MNT_NODIRATIME) && S_ISDIR(inode->i_mode))))
return;
now = current_fs_time(inode->i_sb);
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