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| author | Theodore Ts'o <tytso@mit.edu> | 2013-06-12 11:48:29 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2013-06-12 11:48:29 -0400 |
| commit | 981250ca89261f98bdfd2d6be1fcccb96cbbc00d (patch) | |
| tree | dc60f0b2df0b1544fe551ed415e7cefe1c3d3907 /fs/ext4/extents.c | |
| parent | 2ed5724d5a78a22864ef0bd6af4fcb8a15379f00 (diff) | |
| download | linux-981250ca89261f98bdfd2d6be1fcccb96cbbc00d.tar.gz linux-981250ca89261f98bdfd2d6be1fcccb96cbbc00d.tar.bz2 linux-981250ca89261f98bdfd2d6be1fcccb96cbbc00d.zip | |
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.c | 26 |
1 files changed, 12 insertions, 14 deletions
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 208f664f9ee0..d04f40936397 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), |