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btrfs: streamline btrfs_get_io_failure_record logic

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Make the function directly return a pointer to a failure record and
adjust callers to handle it. Also refactor the logic inside so that
the case which allocates the failure record for the first time is not
handled in an 'if' arm, saving us a level of indentation. Finally make
the function static as it's not used outside of extent_io.c .

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
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
2020-07-02 15:23:29 +03:00
committed by David Sterba
parent 2279a27053
commit 3526302f26
2 changed files with 63 additions and 68 deletions
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2
fs/btrfs/extent-io-tree.h
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@@ -238,8 +238,6 @@ int set_state_failrec(struct extent_io_tree *tree, u64 start,
struct io_failure_record *failrec);
void btrfs_free_io_failure_record(struct btrfs_inode *inode, u64 start,
u64 end);
int btrfs_get_io_failure_record(struct inode *inode, u64 start, u64 end,
struct io_failure_record **failrec_ret);
int free_io_failure(struct extent_io_tree *failure_tree,
struct extent_io_tree *io_tree,
struct io_failure_record *rec);