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ext4: prepare to drop EXT4_STATE_DELALLOC_RESERVED

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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>
This commit is contained in:
Theodore Ts'o
2014-09-04 18:07:25 -04:00
parent a521100231
commit e3cf5d5d9a
5 changed files with 17 additions and 14 deletions
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6
fs/ext4/indirect.c
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@@ -333,7 +333,9 @@ static int ext4_alloc_branch(handle_t *handle,
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 @@ int ext4_ind_map_blocks(handle_t *handle, struct inode *inode,
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);