diff options
| author | David Sterba | 2015-04-24 19:11:57 +0200 |
|---|---|---|
| committer | Chris Mason | 2015-06-03 04:34:34 +0200 |
| commit | c0d19e2b9a521bbdc33049ad92c94b517afda1f0 (patch) | |
| tree | 027f98e9d86a03a53c41fb3c34878c6f12457dc8 /fs/btrfs/super.c | |
| parent | btrfs: report exact callsite where transaction abort occurs (diff) | |
| download | kernel-qcow2-linux-c0d19e2b9a521bbdc33049ad92c94b517afda1f0.tar.gz kernel-qcow2-linux-c0d19e2b9a521bbdc33049ad92c94b517afda1f0.tar.xz kernel-qcow2-linux-c0d19e2b9a521bbdc33049ad92c94b517afda1f0.zip | |
btrfs: add 'cold' compiler annotations to all error handling functions
The annotated functios will be placed into .text.unlikely section. The
annotation also hints compiler to move the code out of the hot paths,
and may implicitly mark if-statement leading to that block as unlikely.
This is a heuristic, the impact on the generated code is not
significant.
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'fs/btrfs/super.c')
| -rw-r--r-- | fs/btrfs/super.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 3c72eea12714..c761d8e068e8 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -135,6 +135,7 @@ static void btrfs_handle_error(struct btrfs_fs_info *fs_info) * __btrfs_std_error decodes expected errors from the caller and * invokes the approciate error response. */ +__cold void __btrfs_std_error(struct btrfs_fs_info *fs_info, const char *function, unsigned int line, int errno, const char *fmt, ...) { @@ -247,6 +248,7 @@ void __btrfs_std_error(struct btrfs_fs_info *fs_info, const char *function, * We'll complete the cleanup in btrfs_end_transaction and * btrfs_commit_transaction. */ +__cold void __btrfs_abort_transaction(struct btrfs_trans_handle *trans, struct btrfs_root *root, const char *function, unsigned int line, int errno) @@ -273,6 +275,7 @@ void __btrfs_abort_transaction(struct btrfs_trans_handle *trans, * __btrfs_panic decodes unexpected, fatal errors from the caller, * issues an alert, and either panics or BUGs, depending on mount options. */ +__cold void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function, unsigned int line, int errno, const char *fmt, ...) { |