Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6:
  quota: Improve checking of quota file header
  jbd: jbd-debug and jbd2-debug should be writable
  ext4: fix sleep inside spinlock issue with quota and dealloc (#14739)
  ext4: Fix potential quota deadlock
  quota: Fix 64-bit limits setting on 32-bit archs
  ext3: Replace lock/unlock_super() with an explicit lock for resizing
  ext3: Replace lock/unlock_super() with an explicit lock for the orphan list
  ext3: ext3_mark_recovery_complete() doesn't need to use lock_super
  ext3: Remove outdated comment about lock_super()
  quota: Move duplicated code to separate functions
  ext4: Convert to generic reserved quota's space management.
  quota: decouple fs reserved space from quota reservation
  Add unlocked version of inode_add_bytes() function
  ext3: quota macros cleanup [V2]

1 files changed, 8 insertions, 2 deletions

diff --git a/fs/stat.c b/fs/stat.c
index 075694e31d8b..c4ecd52c5737 100644
--- a/fs/stat.c
+++ b/fs/stat.c
@@ -401,9 +401,9 @@ SYSCALL_DEFINE4(fstatat64, int, dfd, char __user *, filename,
 }
 #endif /* __ARCH_WANT_STAT64 */
 
-void inode_add_bytes(struct inode *inode, loff_t bytes)
+/* Caller is here responsible for sufficient locking (ie. inode->i_lock) */
+void __inode_add_bytes(struct inode *inode, loff_t bytes)
 {
-        spin_lock(&inode->i_lock);
         inode->i_blocks += bytes >> 9;
         bytes &= 511;
         inode->i_bytes += bytes;
@@ -411,6 +411,12 @@ void inode_add_bytes(struct inode *inode, loff_t bytes)
                 inode->i_blocks++;
                 inode->i_bytes -= 512;
         }
+}
+
+void inode_add_bytes(struct inode *inode, loff_t bytes)
+{
+        spin_lock(&inode->i_lock);
+        __inode_add_bytes(inode, bytes);
         spin_unlock(&inode->i_lock);
 }