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>

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 8c005c0282030be3a8b569794e7b529e93e29cd4..cd70b3041185e1bae8981458089f00bd14981d2a 100644 (file)
--- 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