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f2fs: don't try to split extents shorter than F2FS_MIN_EXTENT_LEN 

Since only parts of extents longer than F2FS_MIN_EXTENT_LEN will
be kept in extent cache after split, extents already shorter than
F2FS_MIN_EXTENT_LEN don't need to try split at all.

Signed-off-by: Fan Li <fanofcode.li@samsung.com>
Reviewed-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Fan Li 2015-07-08 16:02:54 +08:00 committed by Jaegeuk Kim
parent 90d4388ac2
commit 3c7df87dad
1 changed files with 1 additions and 1 deletions
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2
fs/f2fs/data.c
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@ -585,7 +585,7 @@ static bool f2fs_update_extent_tree(struct inode *inode, pgoff_t fofs,
__detach_extent_node(sbi, et, en);
/* 2. if extent can be split more, split and insert the left part */
if (dei.len > 1) {
if (dei.len > F2FS_MIN_EXTENT_LEN) {
/* insert left part of split extent into cache */
if (fofs - dei.fofs >= F2FS_MIN_EXTENT_LEN) {
set_extent_info(&ei, dei.fofs, dei.blk,