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authorTheodore Ts'o <tytso@mit.edu>2011-09-09 18:42:51 -0400
committerTheodore Ts'o <tytso@mit.edu>2011-09-09 18:42:51 -0400
commitfd034a84e1ea5c8c8d159cd2089c32e792c269b0 (patch)
tree5992d541a005137a57a44921fd1be6311ee841d2 /fs/ext4/ialloc.c
parent49f7f9af4bb4d7972f3a35a74877937fec9f622d (diff)
ext4: split out ext4_free_blocks_after_init()
The function ext4_free_blocks_after_init() used to be a #define of ext4_init_block_bitmap(). This actually made it difficult to understand how the function worked, and made it hard make changes to support clusters. So as an initial cleanup, I've separated out the functionality of initializing block bitmap from calculating the number of free blocks in the new block group. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ialloc.c')
-rw-r--r--fs/ext4/ialloc.c20
1 files changed, 7 insertions, 13 deletions
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 9c63f273b55..b7a8130d0af 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -816,7 +816,6 @@ struct inode *ext4_new_inode(handle_t *handle, struct inode *dir, int mode,
int ret2, err = 0;
struct inode *ret;
ext4_group_t i;
- int free = 0;
static int once = 1;
ext4_group_t flex_group;
@@ -950,26 +949,21 @@ got:
goto fail;
}
- free = 0;
- ext4_lock_group(sb, group);
+ BUFFER_TRACE(block_bitmap_bh, "dirty block bitmap");
+ err = ext4_handle_dirty_metadata(handle, NULL, block_bitmap_bh);
+ brelse(block_bitmap_bh);
+
/* recheck and clear flag under lock if we still need to */
+ ext4_lock_group(sb, group);
if (gdp->bg_flags & cpu_to_le16(EXT4_BG_BLOCK_UNINIT)) {
- free = ext4_free_blocks_after_init(sb, group, gdp);
gdp->bg_flags &= cpu_to_le16(~EXT4_BG_BLOCK_UNINIT);
- ext4_free_blks_set(sb, gdp, free);
+ ext4_free_blks_set(sb, gdp,
+ ext4_free_blocks_after_init(sb, group, gdp));
gdp->bg_checksum = ext4_group_desc_csum(sbi, group,
gdp);
}
ext4_unlock_group(sb, group);
- /* Don't need to dirty bitmap block if we didn't change it */
- if (free) {
- BUFFER_TRACE(block_bitmap_bh, "dirty block bitmap");
- err = ext4_handle_dirty_metadata(handle,
- NULL, block_bitmap_bh);
- }
-
- brelse(block_bitmap_bh);
if (err)
goto fail;
}