From: Dave Hansen 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 Signed-off-by: Christoph Hellwig Signed-off-by: Dave Hansen Signed-off-by: Andrew Morton --- fs/xfs/linux-2.6/xfs_iops.c | 7 ------- fs/xfs/linux-2.6/xfs_lrw.c | 9 ++++++++- 2 files changed, 8 insertions(+), 8 deletions(-) diff -puN fs/xfs/linux-2.6/xfs_iops.c~r-o-bind-mounts-elevate-count-for-xfs-timestamp-updates fs/xfs/linux-2.6/xfs_iops.c --- a/fs/xfs/linux-2.6/xfs_iops.c~r-o-bind-mounts-elevate-count-for-xfs-timestamp-updates +++ a/fs/xfs/linux-2.6/xfs_iops.c @@ -157,13 +157,6 @@ 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; diff -puN fs/xfs/linux-2.6/xfs_lrw.c~r-o-bind-mounts-elevate-count-for-xfs-timestamp-updates fs/xfs/linux-2.6/xfs_lrw.c --- a/fs/xfs/linux-2.6/xfs_lrw.c~r-o-bind-mounts-elevate-count-for-xfs-timestamp-updates +++ a/fs/xfs/linux-2.6/xfs_lrw.c @@ -51,6 +51,7 @@ #include "xfs_vnodeops.h" #include +#include #include @@ -679,10 +680,16 @@ 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_vfsmnt))) { file_update_time(file); xfs_ichgtime_fast(xip, inode, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); + mnt_drop_write(file->f_vfsmnt); } /* _