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ext4: Remove old legacy block allocator

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Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Theodore Ts'o
2008-10-10 09:40:52 -04:00
parent 240799cdf2
commit c2ea3fde61
12 changed files with 40 additions and 1528 deletions
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33
fs/ext4/inode.c
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@@ -486,18 +486,9 @@ static ext4_fsblk_t ext4_find_near(struct inode *inode, Indirect *ind)
static ext4_fsblk_t ext4_find_goal(struct inode *inode, ext4_lblk_t block,
Indirect *partial)
{
struct ext4_block_alloc_info *block_i;
block_i = EXT4_I(inode)->i_block_alloc_info;
/*
* try the heuristic for sequential allocation,
* failing that at least try to get decent locality.
* XXX need to get goal block from mballoc's data structures
*/
if (block_i && (block == block_i->last_alloc_logical_block + 1)
&& (block_i->last_alloc_physical_block != 0)) {
return block_i->last_alloc_physical_block + 1;
}
return ext4_find_near(inode, partial);
}
@@ -757,10 +748,8 @@ static int ext4_splice_branch(handle_t *handle, struct inode *inode,
{
int i;
int err = 0;
struct ext4_block_alloc_info *block_i;
ext4_fsblk_t current_block;
block_i = EXT4_I(inode)->i_block_alloc_info;
/*
* If we're splicing into a [td]indirect block (as opposed to the
* inode) then we need to get write access to the [td]indirect block
@@ -786,17 +775,6 @@ static int ext4_splice_branch(handle_t *handle, struct inode *inode,
*(where->p + i) = cpu_to_le32(current_block++);
}
/*
* update the most recently allocated logical & physical block
* in i_block_alloc_info, to assist find the proper goal block for next
* allocation
*/
if (block_i) {
block_i->last_alloc_logical_block = block + blks - 1;
block_i->last_alloc_physical_block =
le32_to_cpu(where[num].key) + blks - 1;
}
/* We are done with atomic stuff, now do the rest of housekeeping */
inode->i_ctime = ext4_current_time(inode);
@@ -914,12 +892,8 @@ int ext4_get_blocks_handle(handle_t *handle, struct inode *inode,
goto cleanup;
/*
* Okay, we need to do block allocation. Lazily initialize the block
* allocation info here if necessary
* Okay, we need to do block allocation.
*/
if (S_ISREG(inode->i_mode) && (!ei->i_block_alloc_info))
ext4_init_block_alloc_info(inode);
goal = ext4_find_goal(inode, iblock, partial);
/* the number of blocks need to allocate for [d,t]indirect blocks */
@@ -3738,7 +3712,7 @@ void ext4_truncate(struct inode *inode)
*/
down_write(&ei->i_data_sem);
ext4_discard_reservation(inode);
ext4_discard_preallocations(inode);
/*
* The orphan list entry will now protect us from any crash which
@@ -4071,7 +4045,6 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
ei->i_acl = EXT4_ACL_NOT_CACHED;
ei->i_default_acl = EXT4_ACL_NOT_CACHED;
#endif
ei->i_block_alloc_info = NULL;
ret = __ext4_get_inode_loc(inode, &iloc, 0);
if (ret < 0)