[PATCH] f2fs: Don't try to split extents shorter than F2FS_MIN_EXTENT_LEN

[Fan Li <fanofcode.li@samsung.com>]

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>
---
 fs/f2fs/data.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 37a2632..e2996cb 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -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,
-- 
1.7.9.5


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