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authorJeff Mahoney <jeffm@suse.com>2011-10-03 23:22:31 -0400
committerDavid Sterba <dsterba@suse.cz>2012-03-22 01:45:29 +0100
commit8c3429300181be44b30f9f017d53dc717da56caa (patch)
tree76d2b3155bfff43ac4c96df7d6ccb723849c6e9f /fs/btrfs/ctree.h
parentc16fa4f2ad19908a47c63d8fa436a1178438c7e7 (diff)
downloadop-kernel-dev-8c3429300181be44b30f9f017d53dc717da56caa.zip
op-kernel-dev-8c3429300181be44b30f9f017d53dc717da56caa.tar.gz
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.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 80b6486..a97a670 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);
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