ext4: Use ext4_discard_reservations instead of mballoc-specific call

In ext4_ext_truncate(), we should use the more generic
ext4_discard_reservations() call so we do the right thing when the
filesystem is mounted with the nomballoc option.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Reviewed-by: Mingming Cao <cmm@us.ibm.com>

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 612c3d2c38240ff59a643bcbf405c2229443a848..7212947a8ca32cb39dab228ab3940d0936215212 100644 (file)
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -2819,7 +2819,7 @@ void ext4_ext_truncate(struct inode *inode)
        down_write(&EXT4_I(inode)->i_data_sem);
        ext4_ext_invalidate_cache(inode);
 
-       ext4_mb_discard_inode_preallocations(inode);
+       ext4_discard_reservation(inode);
 
        /*
         * TODO: optimization is possible here.