Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

[cascardo/linux.git] / fs / super.c

diff --git a/fs/super.c b/fs/super.c
index 872b26b..b9a214d 100644 (file)
--- a/fs/super.c
+++ b/fs/super.c
@@ -22,7 +22,6 @@
 
 #include <linux/export.h>
 #include <linux/slab.h>
-#include <linux/acct.h>
 #include <linux/blkdev.h>
 #include <linux/mount.h>
 #include <linux/security.h>
@@ -701,12 +700,22 @@ int do_remount_sb(struct super_block *sb, int flags, void *data, int force)
                return -EACCES;
 #endif
 
-       if (flags & MS_RDONLY)
-               acct_auto_close(sb);
-       shrink_dcache_sb(sb);
-
        remount_ro = (flags & MS_RDONLY) && !(sb->s_flags & MS_RDONLY);
 
+       if (remount_ro) {
+               if (sb->s_pins.first) {
+                       up_write(&sb->s_umount);
+                       sb_pin_kill(sb);
+                       down_write(&sb->s_umount);
+                       if (!sb->s_root)
+                               return 0;
+                       if (sb->s_writers.frozen != SB_UNFROZEN)
+                               return -EBUSY;
+                       remount_ro = (flags & MS_RDONLY) && !(sb->s_flags & MS_RDONLY);
+               }
+       }
+       shrink_dcache_sb(sb);
+
        /* If we are remounting RDONLY and current sb is read/write,
           make sure there are no rw files opened */
        if (remount_ro) {