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authorChao Yu <yuchao0@huawei.com>2018-08-08 17:36:41 +0800
committerJaegeuk Kim <jaegeuk@kernel.org>2018-08-13 10:48:17 -0700
commitd494500a70434223bc35f862fab0679b13bea23d (patch)
treee1b31c567401d6c0486aaadf37332a26d6bf36c1 /fs/f2fs
parent3f16ecd950e56d60a574f73af9538f6e24030f9a (diff)
downloadlinux-d494500a70434223bc35f862fab0679b13bea23d.tar.bz2
f2fs: support fault_type mount option
Previously, once fault injection is on, by default, all kind of faults will be injected to f2fs, if we want to trigger single or specified combined type during the test, we need to configure sysfs entry, it will be a little inconvenient to integrate sysfs configuring into testsuit, such as xfstest. So this patch introduces a new mount option 'fault_type' to assist old option 'fault_injection', with these two mount options, we can specify any fault rate/type at mount-time. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs')
-rw-r--r--fs/f2fs/checkpoint.c2
-rw-r--r--fs/f2fs/f2fs.h7
-rw-r--r--fs/f2fs/super.c34
3 files changed, 33 insertions, 10 deletions
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 31561026ac9a..3ab7a00c0641 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -28,7 +28,7 @@ struct kmem_cache *f2fs_inode_entry_slab;
void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io)
{
- f2fs_build_fault_attr(sbi, 0);
+ f2fs_build_fault_attr(sbi, 0, 0);
set_ckpt_flags(sbi, CP_ERROR_FLAG);
if (!end_io)
f2fs_flush_merged_writes(sbi);
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 95244e75dfc4..375aa9f30cfa 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -60,6 +60,8 @@ enum {
FAULT_MAX,
};
+#define F2FS_ALL_FAULT_TYPE ((1 << FAULT_MAX) - 1)
+
struct f2fs_fault_info {
atomic_t inject_ops;
unsigned int inject_rate;
@@ -3435,9 +3437,10 @@ static inline bool f2fs_force_buffered_io(struct inode *inode, int rw)
}
#ifdef CONFIG_F2FS_FAULT_INJECTION
-extern void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate);
+extern void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
+ unsigned int type);
#else
-#define f2fs_build_fault_attr(sbi, rate) do { } while (0)
+#define f2fs_build_fault_attr(sbi, rate, type) do { } while (0)
#endif
#endif
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 30bd9138f39d..be41dbd7b261 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -58,17 +58,21 @@ char *f2fs_fault_name[FAULT_MAX] = {
[FAULT_DISCARD] = "discard error",
};
-void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate)
+void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
+ unsigned int type)
{
struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
if (rate) {
atomic_set(&ffi->inject_ops, 0);
ffi->inject_rate = rate;
- ffi->inject_type = (1 << FAULT_MAX) - 1;
- } else {
- memset(ffi, 0, sizeof(struct f2fs_fault_info));
}
+
+ if (type)
+ ffi->inject_type = type;
+
+ if (!rate && !type)
+ memset(ffi, 0, sizeof(struct f2fs_fault_info));
}
#endif
@@ -113,6 +117,7 @@ enum {
Opt_mode,
Opt_io_size_bits,
Opt_fault_injection,
+ Opt_fault_type,
Opt_lazytime,
Opt_nolazytime,
Opt_quota,
@@ -170,6 +175,7 @@ static match_table_t f2fs_tokens = {
{Opt_mode, "mode=%s"},
{Opt_io_size_bits, "io_bits=%u"},
{Opt_fault_injection, "fault_injection=%u"},
+ {Opt_fault_type, "fault_type=%u"},
{Opt_lazytime, "lazytime"},
{Opt_nolazytime, "nolazytime"},
{Opt_quota, "quota"},
@@ -600,7 +606,18 @@ static int parse_options(struct super_block *sb, char *options)
if (args->from && match_int(args, &arg))
return -EINVAL;
#ifdef CONFIG_F2FS_FAULT_INJECTION
- f2fs_build_fault_attr(sbi, arg);
+ f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE);
+ set_opt(sbi, FAULT_INJECTION);
+#else
+ f2fs_msg(sb, KERN_INFO,
+ "FAULT_INJECTION was not selected");
+#endif
+ break;
+ case Opt_fault_type:
+ if (args->from && match_int(args, &arg))
+ return -EINVAL;
+#ifdef CONFIG_F2FS_FAULT_INJECTION
+ f2fs_build_fault_attr(sbi, 0, arg);
set_opt(sbi, FAULT_INJECTION);
#else
f2fs_msg(sb, KERN_INFO,
@@ -1321,9 +1338,12 @@ static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
if (F2FS_IO_SIZE_BITS(sbi))
seq_printf(seq, ",io_size=%uKB", F2FS_IO_SIZE_KB(sbi));
#ifdef CONFIG_F2FS_FAULT_INJECTION
- if (test_opt(sbi, FAULT_INJECTION))
+ if (test_opt(sbi, FAULT_INJECTION)) {
seq_printf(seq, ",fault_injection=%u",
F2FS_OPTION(sbi).fault_info.inject_rate);
+ seq_printf(seq, ",fault_type=%u",
+ F2FS_OPTION(sbi).fault_info.inject_type);
+ }
#endif
#ifdef CONFIG_QUOTA
if (test_opt(sbi, QUOTA))
@@ -1393,7 +1413,7 @@ static void default_options(struct f2fs_sb_info *sbi)
set_opt(sbi, POSIX_ACL);
#endif
- f2fs_build_fault_attr(sbi, 0);
+ f2fs_build_fault_attr(sbi, 0, 0);
}
#ifdef CONFIG_QUOTA