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[PATCH] r/o bind mounts: elevate count for xfs timestamp updates 

Elevate the write count during the xfs m/ctime updates.

XFS has to do it's own timestamp updates due to an unfortunate VFS
design limitation, so it will have to track writers by itself aswell.

[hch: split out from the touch_atime patch as it's not related to it at all]

Acked-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
wifi-calibration
Dave Hansen 2008-02-15 14:37:53 -08:00 committed by Al Viro
parent 2f676cbc0d
commit ec82687f29
2 changed files with 8 additions and 8 deletions
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7
fs/xfs/linux-2.6/xfs_iops.c
View File

@ -155,13 +155,6 @@ xfs_ichgtime_fast(
*/
ASSERT((flags & XFS_ICHGTIME_ACC) == 0);
/*
* We're not supposed to change timestamps in readonly-mounted
* filesystems. Throw it away if anyone asks us.
*/
if (unlikely(IS_RDONLY(inode)))
return;
if (flags & XFS_ICHGTIME_MOD) {
tvp = &inode->i_mtime;
ip->i_d.di_mtime.t_sec = (__int32_t)tvp->tv_sec;

9
fs/xfs/linux-2.6/xfs_lrw.c
View File

@ -51,6 +51,7 @@
#include "xfs_vnodeops.h"
#include <linux/capability.h>
#include <linux/mount.h>
#include <linux/writeback.h>
@ -670,10 +671,16 @@ start:
if (new_size > xip->i_size)
xip->i_new_size = new_size;
if (likely(!(ioflags & IO_INVIS))) {
/*
* We're not supposed to change timestamps in readonly-mounted
* filesystems. Throw it away if anyone asks us.
*/
if (likely(!(ioflags & IO_INVIS) &&
!mnt_want_write(file->f_path.mnt))) {
file_update_time(file);
xfs_ichgtime_fast(xip, inode,
XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
mnt_drop_write(file->f_path.mnt);
}
/*