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Message-Id: <20070917182735.ED143E7B@kernel> Date: Mon, 17 Sep 2007 11:27:35 -0700 From: Dave Hansen <haveblue@...ibm.com> To: akpm@...l.org Cc: linux-kernel@...r.kernel.org, hch@...radead.org, Dave Hansen <haveblue@...ibm.com> Subject: [PATCH 13/24] elevate write count for file_update_time() Signed-off-by: Dave Hansen <haveblue@...ibm.com> --- lxc-dave/fs/inode.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff -puN fs/inode.c~elevate-write-count-for-file_update_time fs/inode.c --- lxc/fs/inode.c~elevate-write-count-for-file_update_time 2007-09-17 09:44:03.000000000 -0700 +++ lxc-dave/fs/inode.c 2007-09-17 09:44:03.000000000 -0700 @@ -1241,10 +1241,19 @@ void file_update_time(struct file *file) struct inode *inode = file->f_path.dentry->d_inode; struct timespec now; int sync_it = 0; + int err = 0; if (IS_NOCMTIME(inode)) return; - if (IS_RDONLY(inode)) + /* + * Ideally, we want to guarantee that 'f_vfsmnt' + * is non-NULL here. But, NFS exports need to + * be fixed up before we can do that. So, check + * it for now. - Dave Hansen + */ + if (file->f_vfsmnt) + err = mnt_want_write(file->f_vfsmnt); + if (err) return; now = current_fs_time(inode->i_sb); @@ -1260,6 +1269,8 @@ void file_update_time(struct file *file) if (sync_it) mark_inode_dirty_sync(inode); + if (file->f_vfsmnt) + mnt_drop_write(file->f_vfsmnt); } EXPORT_SYMBOL(file_update_time); _ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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