ext4: Allow quota file use root reservation

Quota file is fs's metadata, so it is reasonable  to permit use
root resevation if necessary. This patch fix 265'th xfstest failure

Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 8c005c028203..cd70b3041185 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -4291,6 +4291,10 @@ ext4_fsblk_t ext4_mb_new_blocks(handle_t *handle,
 
         trace_ext4_request_blocks(ar);
 
+        /* Allow to use superuser reservation for quota file */
+        if (IS_NOQUOTA(ar->inode))
+                ar->flags |= EXT4_MB_USE_ROOT_BLOCKS;
+
         /*
          * For delayed allocation, we could skip the ENOSPC and
          * EDQUOT check, as blocks and quotas have been already