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btrfs: Simplify update of space_info in __reserve_metadata_bytes() 

We don't need an if-else-if chain where we can use a simple OR since
both conditions are performing the same action. The short-circuit for OR
will ensure that if the first condition is true, can_overcommit() is not
called.

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
alistair/sunxi64-5.4-dsi
Goldwyn Rodrigues 2019-06-25 20:11:31 +02:00 committed by David Sterba
parent 83d731a5b2
commit 9b4851bc48
1 changed files with 5 additions and 11 deletions
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16
fs/btrfs/space-info.c
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@ -967,18 +967,12 @@ static int __reserve_metadata_bytes(struct btrfs_fs_info *fs_info,
used = btrfs_space_info_used(space_info, true);
/*
* If we have enough space then hooray, make our reservation and carry
* on. If not see if we can overcommit, and if we can, hooray carry on.
* If not things get more complicated.
* Carry on if we have enough space (short-circuit) OR call
* can_overcommit() to ensure we can overcommit to continue.
*/
if (used + orig_bytes <= space_info->total_bytes) {
btrfs_space_info_update_bytes_may_use(fs_info, space_info,
orig_bytes);
trace_btrfs_space_reservation(fs_info, "space_info",
space_info->flags, orig_bytes, 1);
ret = 0;
} else if (can_overcommit(fs_info, space_info, orig_bytes, flush,
system_chunk)) {
if ((used + orig_bytes <= space_info->total_bytes) ||
can_overcommit(fs_info, space_info, orig_bytes, flush,
system_chunk)) {
btrfs_space_info_update_bytes_may_use(fs_info, space_info,
orig_bytes);
trace_btrfs_space_reservation(fs_info, "space_info",