Add errors=panic mount option for debugging purpose. It can be set dynamically when the config option CONFIG_F2FS_CHECK_FS is not enabled.
Signed-off-by: Sahitya Tummala <[email protected]> --- fs/f2fs/f2fs.h | 9 +++++++-- fs/f2fs/super.c | 21 +++++++++++++++++++++ 2 files changed, 28 insertions(+), 2 deletions(-) diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 9b3d997..95adedb 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -32,8 +32,12 @@ #define f2fs_bug_on(sbi, condition) \ do { \ if (unlikely(condition)) { \ - WARN_ON(1); \ - set_sbi_flag(sbi, SBI_NEED_FSCK); \ + if (test_opt(sbi, ERRORS_PANIC)) { \ + BUG_ON(condition); \ + } else { \ + WARN_ON(1); \ + set_sbi_flag(sbi, SBI_NEED_FSCK); \ + } \ } \ } while (0) #endif @@ -99,6 +103,7 @@ struct f2fs_fault_info { #define F2FS_MOUNT_INLINE_XATTR_SIZE 0x00800000 #define F2FS_MOUNT_RESERVE_ROOT 0x01000000 #define F2FS_MOUNT_DISABLE_CHECKPOINT 0x02000000 +#define F2FS_MOUNT_ERRORS_PANIC 0x04000000 #define F2FS_OPTION(sbi) ((sbi)->mount_opt) #define clear_opt(sbi, option) (F2FS_OPTION(sbi).opt &= ~F2FS_MOUNT_##option) diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 912e261..7d6d96a 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -137,6 +137,7 @@ enum { Opt_fsync, Opt_test_dummy_encryption, Opt_checkpoint, + Opt_errors, Opt_err, }; @@ -196,6 +197,7 @@ enum { {Opt_fsync, "fsync_mode=%s"}, {Opt_test_dummy_encryption, "test_dummy_encryption"}, {Opt_checkpoint, "checkpoint=%s"}, + {Opt_errors, "errors=%s"}, {Opt_err, NULL}, }; @@ -788,6 +790,23 @@ static int parse_options(struct super_block *sb, char *options) } kvfree(name); break; + case Opt_errors: +#ifndef CONFIG_F2FS_CHECK_FS + name = match_strdup(&args[0]); + if (!name) + return -ENOMEM; + + if (strlen(name) == 5 && !strncmp(name, "panic", 5)) { + set_opt(sbi, ERRORS_PANIC); + } else { + kvfree(name); + return -EINVAL; + } + kvfree(name); + f2fs_msg(sb, KERN_INFO, + "debug mode errors=panic enabled\n"); +#endif + break; default: f2fs_msg(sb, KERN_ERR, "Unrecognized mount option \"%s\" or missing value", @@ -1417,6 +1436,8 @@ static int f2fs_show_options(struct seq_file *seq, struct dentry *root) seq_printf(seq, ",fsync_mode=%s", "strict"); else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER) seq_printf(seq, ",fsync_mode=%s", "nobarrier"); + if (test_opt(sbi, ERRORS_PANIC)) + seq_printf(seq, ",errors=%s", "panic"); return 0; } -- Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.
