ext4: prepare to drop EXT4_STATE_DELALLOC_RESERVED
The EXT4_STATE_DELALLOC_RESERVED flag was originally implemented
because it was too hard to make sure the mballoc and get_block flags
could be reliably passed down through all of the codepaths that end up
calling ext4_mb_new_blocks().
Since then, we have mb_flags passed down through most of the code
paths, so getting rid of EXT4_STATE_DELALLOC_RESERVED isn't as tricky
as it used to.
This commit plumbs in the last of what is required, and then adds a
WARN_ON check to make sure we haven't missed anything. If this passes
a full regression test run, we can then drop
EXT4_STATE_DELALLOC_RESERVED.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jan Kara <jack@suse.cz>
diff --git a/fs/ext4/indirect.c b/fs/ext4/indirect.c
index 69af0cd..36b3696 100644
--- a/fs/ext4/indirect.c
+++ b/fs/ext4/indirect.c
@@ -333,7 +333,9 @@
new_blocks[i] = ext4_mb_new_blocks(handle, ar, &err);
} else
ar->goal = new_blocks[i] = ext4_new_meta_blocks(handle,
- ar->inode, ar->goal, 0, NULL, &err);
+ ar->inode, ar->goal,
+ ar->flags & EXT4_MB_DELALLOC_RESERVED,
+ NULL, &err);
if (err) {
i--;
goto failed;
@@ -572,6 +574,8 @@
ar.logical = map->m_lblk;
if (S_ISREG(inode->i_mode))
ar.flags = EXT4_MB_HINT_DATA;
+ if (flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE)
+ ar.flags |= EXT4_MB_DELALLOC_RESERVED;
ar.goal = ext4_find_goal(inode, map->m_lblk, partial);