GitHub-Mirror/linux-bl808
2
0
Fork 0
mirror of https://github.com/Fishwaldo/linux-bl808.git synced 2025-06-17 20:25:19 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

btrfs: eliminate insert label in add_falloc_range

Browse source 
By way of inverting the list_empty conditional the insert label can be
eliminated, making the function's flow entirely linear.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Nikolay Borisov 2021-06-01 09:08:15 +03:00 • committed by David Sterba
parent 3d078efae6
commit 77d255348b
1 changed files with 11 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

23
fs/btrfs/file.c
View file

@ -3050,19 +3050,18 @@ static int add_falloc_range(struct list_head *head, u64 start, u64 len)
{ {
struct falloc_range *range = NULL; struct falloc_range *range = NULL;
if (list_empty(head)) if (!list_empty(head)) {
goto insert; /*
* As fallocate iterates by bytenr order, we only need to check
/* * the last range.
* As fallocate iterate by bytenr order, we only need to check */
* the last range. range = list_last_entry(head, struct falloc_range, list);
*/ if (range->start + range->len == start) {
range = list_last_entry(head, struct falloc_range, list); range->len += len;
if (range->start + range->len == start) { return 0;
range->len += len; }
return 0;
} }
insert:
range = kmalloc(sizeof(*range), GFP_KERNEL); range = kmalloc(sizeof(*range), GFP_KERNEL);
if (!range) if (!range)
return -ENOMEM; return -ENOMEM;