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authorTheodore Ts'o <tytso@mit.edu>2008-12-12 12:41:28 -0500
committerTheodore Ts'o <tytso@mit.edu>2008-12-12 12:41:28 -0500
commit97df5d155dee478efe33b001f502e9630e1bba92 (patch)
tree11847bd119be9b68365a2fa4beb5f95f691162b1 /fs/ext4/balloc.c
parentcfe82c856747b7841a3a00d591ce9ed46f579d27 (diff)
ext4: remove do_blk_alloc()
The convenience function do_blk_alloc() is a static function with only one caller, so fold it into ext4_new_meta_blocks() to simplify the code and to make it easier to understand. To save more stack space, if count is a null pointer in ext4_new_meta_blocks() assume that caller wanted a single block (and if there is an error, no blocks were allocated). Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/balloc.c')
-rw-r--r--fs/ext4/balloc.c49
1 files changed, 15 insertions, 34 deletions
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index 98a97129fc5..35f5f9a2772 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -666,59 +666,40 @@ int ext4_should_retry_alloc(struct super_block *sb, int *retries)
return jbd2_journal_force_commit_nested(EXT4_SB(sb)->s_journal);
}
-#define EXT4_META_BLOCK 0x1
-
-static ext4_fsblk_t do_blk_alloc(handle_t *handle, struct inode *inode,
- ext4_lblk_t iblock, ext4_fsblk_t goal,
- unsigned long *count, int *errp, int flags)
-{
- struct ext4_allocation_request ar;
- ext4_fsblk_t ret;
-
- memset(&ar, 0, sizeof(ar));
- /* Fill with neighbour allocated blocks */
-
- ar.inode = inode;
- ar.goal = goal;
- ar.len = *count;
- ar.logical = iblock;
-
- if (S_ISREG(inode->i_mode) && !(flags & EXT4_META_BLOCK))
- /* enable in-core preallocation for data block allocation */
- ar.flags = EXT4_MB_HINT_DATA;
- else
- /* disable in-core preallocation for non-regular files */
- ar.flags = 0;
-
- ret = ext4_mb_new_blocks(handle, &ar, errp);
- *count = ar.len;
- return ret;
-}
-
/*
* ext4_new_meta_blocks() -- allocate block for meta data (indexing) blocks
*
* @handle: handle to this transaction
* @inode: file inode
* @goal: given target block(filesystem wide)
- * @count: total number of blocks need
+ * @count: pointer to total number of blocks needed
* @errp: error code
*
- * Return 1st allocated block numberon success, *count stores total account
+ * Return 1st allocated block number on success, *count stores total account
* error stores in errp pointer
*/
ext4_fsblk_t ext4_new_meta_blocks(handle_t *handle, struct inode *inode,
ext4_fsblk_t goal, unsigned long *count, int *errp)
{
+ struct ext4_allocation_request ar;
ext4_fsblk_t ret;
- ret = do_blk_alloc(handle, inode, 0, goal,
- count, errp, EXT4_META_BLOCK);
+
+ memset(&ar, 0, sizeof(ar));
+ /* Fill with neighbour allocated blocks */
+ ar.inode = inode;
+ ar.goal = goal;
+ ar.len = count ? *count : 1;
+
+ ret = ext4_mb_new_blocks(handle, &ar, errp);
+ if (count)
+ *count = ar.len;
+
/*
* Account for the allocated meta blocks
*/
if (!(*errp) && EXT4_I(inode)->i_delalloc_reserved_flag) {
spin_lock(&EXT4_I(inode)->i_block_reservation_lock);
- EXT4_I(inode)->i_allocated_meta_blocks += *count;
+ EXT4_I(inode)->i_allocated_meta_blocks += ar.len;
spin_unlock(&EXT4_I(inode)->i_block_reservation_lock);
}
return ret;