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| author | Jeff Mahoney <jeffm@suse.com> | 2011-10-03 23:22:31 -0400 |
|---|---|---|
| committer | David Sterba <dsterba@suse.cz> | 2012-03-22 01:45:29 +0100 |
| commit | 8c3429300181be44b30f9f017d53dc717da56caa (patch) | |
| tree | 76d2b3155bfff43ac4c96df7d6ccb723849c6e9f /fs/btrfs/ctree.h | |
| parent | c16fa4f2ad19908a47c63d8fa436a1178438c7e7 (diff) | |
| download | linux-8c3429300181be44b30f9f017d53dc717da56caa.tar.bz2 | |
btrfs: Add btrfs_panic()
As part of the effort to eliminate BUG_ON as an error handling
technique, we need to determine which errors are actual logic errors,
which are on-disk corruption, and which are normal runtime errors
e.g. -ENOMEM.
Annotating these error cases is helpful to understand and report them.
This patch adds a btrfs_panic() routine that will either panic
or BUG depending on the new -ofatal_errors={panic,bug} mount option.
Since there are still so many BUG_ONs, it defaults to BUG for now but I
expect that to change once the error handling effort has made
significant progress.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 80b6486fd5e6..a97a67089755 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -1503,6 +1503,7 @@ struct btrfs_ioctl_defrag_range_args { #define BTRFS_MOUNT_SKIP_BALANCE (1 << 19) #define BTRFS_MOUNT_CHECK_INTEGRITY (1 << 20) #define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21) +#define BTRFS_MOUNT_PANIC_ON_FATAL_ERROR (1 << 22) #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) @@ -2970,6 +2971,16 @@ do { \ __btrfs_std_error((fs_info), __func__, __LINE__, (errno));\ } while (0) +void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function, + unsigned int line, int errno, const char *fmt, ...); + +#define btrfs_panic(fs_info, errno, fmt, args...) \ +do { \ + struct btrfs_fs_info *_i = (fs_info); \ + __btrfs_panic(_i, __func__, __LINE__, errno, fmt, ##args); \ + BUG_ON(!(_i->mount_opt & BTRFS_MOUNT_PANIC_ON_FATAL_ERROR)); \ +} while (0) + /* acl.c */ #ifdef CONFIG_BTRFS_FS_POSIX_ACL struct posix_acl *btrfs_get_acl(struct inode *inode, int type); |