ext4: Change unsigned long to unsigned int

Convert the unsigned longs that are most responsible for bloating the
stack usage on 64-bit systems.

Nearly all places in the ext3/4 code which uses "unsigned long" is
probably a bug, since on 32-bit systems a ulong a 32-bits, which means
we are wasting stack space on 64-bit systems.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

1 files changed, 7 insertions, 6 deletions

diff --git a/fs/ext4/ext4_i.h b/fs/ext4/ext4_i.h
index 0a9ebe580195..e69acc16f5c4 100644
--- a/fs/ext4/ext4_i.h
+++ b/fs/ext4/ext4_i.h
@@ -100,9 +100,6 @@ struct ext4_inode_info {
          */
         loff_t  i_disksize;
 
-        /* on-disk additional length */
-        __u16 i_extra_isize;
-
         /*
          * i_data_sem is for serialising ext4_truncate() against
          * ext4_getblock().  In the 2.4 ext2 design, great chunks of inode's
@@ -129,10 +126,14 @@ struct ext4_inode_info {
         spinlock_t i_prealloc_lock;
 
         /* allocation reservation info for delalloc */
-        unsigned long i_reserved_data_blocks;
-        unsigned long i_reserved_meta_blocks;
-        unsigned long i_allocated_meta_blocks;
+        unsigned int i_reserved_data_blocks;
+        unsigned int i_reserved_meta_blocks;
+        unsigned int i_allocated_meta_blocks;
         unsigned short i_delalloc_reserved_flag;
+
+        /* on-disk additional length */
+        __u16 i_extra_isize;
+
         spinlock_t i_block_reservation_lock;
 };