mark_files_ro(): don't bother with mntget/mntput
mnt_drop_write_file() is safe under any lock
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/file_table.c b/fs/file_table.c
index a305d9e..9ace278 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -483,10 +483,8 @@
{
struct file *f;
-retry:
lg_global_lock(&files_lglock);
do_file_list_for_each_entry(sb, f) {
- struct vfsmount *mnt;
if (!S_ISREG(f->f_path.dentry->d_inode->i_mode))
continue;
if (!file_count(f))
@@ -499,12 +497,7 @@
if (file_check_writeable(f) != 0)
continue;
file_release_write(f);
- mnt = mntget(f->f_path.mnt);
- /* This can sleep, so we can't hold the spinlock. */
- lg_global_unlock(&files_lglock);
- mnt_drop_write(mnt);
- mntput(mnt);
- goto retry;
+ mnt_drop_write_file(f);
} while_file_list_for_each_entry;
lg_global_unlock(&files_lglock);
}