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authorNikolay Borisov <nborisov@suse.com>2019-10-08 16:26:16 +0300
committerDavid Sterba <dsterba@suse.com>2019-11-18 12:46:54 +0100
commitce6d3eb6fd5cfede81c7a3d540919f6d92faaac0 (patch)
treed0aeb26ddb7a86bca574e51b9153530cbdaf1759 /fs/btrfs
parent67439dadb03ad9da45bfccb4cdb6ef6b1a7f8da9 (diff)
downloadlinux-ce6d3eb6fd5cfede81c7a3d540919f6d92faaac0.tar.bz2
btrfs: User assert to document transaction requirement
Using an ASSERT in btrfs_pin_extent allows to more stringently observe whether the function is called under a transaction or not. Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Nikolay Borisov <nborisov@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs')
-rw-r--r--fs/btrfs/extent-tree.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 9e5845548b76..569fd2adecaa 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -2590,14 +2590,13 @@ static int pin_down_extent(struct btrfs_block_group_cache *cache,
return 0;
}
-/*
- * this function must be called within transaction
- */
int btrfs_pin_extent(struct btrfs_fs_info *fs_info,
u64 bytenr, u64 num_bytes, int reserved)
{
struct btrfs_block_group_cache *cache;
+ ASSERT(fs_info->running_transaction);
+
cache = btrfs_lookup_block_group(fs_info, bytenr);
BUG_ON(!cache); /* Logic error */