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authorTheodore Ts'o <tytso@mit.edu>2013-06-12 11:48:29 -0400
committerTheodore Ts'o <tytso@mit.edu>2013-06-12 11:48:29 -0400
commit981250ca89261f98bdfd2d6be1fcccb96cbbc00d (patch)
treedc60f0b2df0b1544fe551ed415e7cefe1c3d3907 /fs/ext4/extents.c
parent2ed5724d5a78a22864ef0bd6af4fcb8a15379f00 (diff)
ext4: don't use EXT4_FREE_BLOCKS_FORGET unnecessarily
Commit 18888cf0883c: "ext4: speed up truncate/unlink by not using bforget() unless needed" removed the use of EXT4_FREE_BLOCKS_FORGET in the most important codepath for file systems using extents, but a similar optimization also can be done for file systems using indirect blocks, and for the two special cases in the ext4 extents code. Cc: Andrey Sidorov <qrxd43@motorola.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/extents.c')
-rw-r--r--fs/ext4/extents.c26
1 files changed, 12 insertions, 14 deletions
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 208f664f9ee..d04f4093639 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -2355,6 +2355,15 @@ int ext4_ext_index_trans_blocks(struct inode *inode, int extents)
return index;
}
+static inline int get_default_free_blocks_flags(struct inode *inode)
+{
+ if (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode))
+ return EXT4_FREE_BLOCKS_METADATA | EXT4_FREE_BLOCKS_FORGET;
+ else if (ext4_should_journal_data(inode))
+ return EXT4_FREE_BLOCKS_FORGET;
+ return 0;
+}
+
static int ext4_remove_blocks(handle_t *handle, struct inode *inode,
struct ext4_extent *ex,
long long *partial_cluster,
@@ -2363,12 +2372,7 @@ static int ext4_remove_blocks(handle_t *handle, struct inode *inode,
struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
unsigned short ee_len = ext4_ext_get_actual_len(ex);
ext4_fsblk_t pblk;
- int flags = 0;
-
- if (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode))
- flags |= EXT4_FREE_BLOCKS_METADATA | EXT4_FREE_BLOCKS_FORGET;
- else if (ext4_should_journal_data(inode))
- flags |= EXT4_FREE_BLOCKS_FORGET;
+ int flags = get_default_free_blocks_flags(inode);
/*
* For bigalloc file systems, we never free a partial cluster
@@ -2635,10 +2639,7 @@ ext4_ext_rm_leaf(handle_t *handle, struct inode *inode,
if (*partial_cluster > 0 &&
(EXT4_B2C(sbi, ext4_ext_pblock(ex) + ex_ee_len - 1) !=
*partial_cluster)) {
- int flags = EXT4_FREE_BLOCKS_FORGET;
-
- if (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode))
- flags |= EXT4_FREE_BLOCKS_METADATA;
+ int flags = get_default_free_blocks_flags(inode);
ext4_free_blocks(handle, inode, NULL,
EXT4_C2B(sbi, *partial_cluster),
@@ -2869,10 +2870,7 @@ again:
* even the first extent, then we should free the blocks in the partial
* cluster as well. */
if (partial_cluster > 0 && path->p_hdr->eh_entries == 0) {
- int flags = EXT4_FREE_BLOCKS_FORGET;
-
- if (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode))
- flags |= EXT4_FREE_BLOCKS_METADATA;
+ int flags = get_default_free_blocks_flags(inode);
ext4_free_blocks(handle, inode, NULL,
EXT4_C2B(EXT4_SB(sb), partial_cluster),