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f2fs: show simple call stack in fault injection message

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Previously kernel message can show that in which function we do the
injection, but unfortunately, most of the caller are the same, for
tracking more information of injection path, it needs to show upper
caller's name. This patch supports that ability.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2017-02-25 11:08:28 +08:00 committed by Jaegeuk Kim
parent dd7b2333e6
commit 55523519bc
8 changed files with 32 additions and 13 deletions
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1
fs/f2fs/checkpoint.c
View File

@ -494,6 +494,7 @@ int acquire_orphan_inode(struct f2fs_sb_info *sbi)
#ifdef CONFIG_F2FS_FAULT_INJECTION
if (time_to_inject(sbi, FAULT_ORPHAN)) {
spin_unlock(&im->ino_lock);
f2fs_show_injection_info(FAULT_ORPHAN);
return -ENOSPC;
}
#endif

4
fs/f2fs/data.c
View File

@ -55,8 +55,10 @@ static void f2fs_read_end_io(struct bio *bio)
int i;
#ifdef CONFIG_F2FS_FAULT_INJECTION
if (time_to_inject(F2FS_P_SB(bio->bi_io_vec->bv_page), FAULT_IO))
if (time_to_inject(F2FS_P_SB(bio->bi_io_vec->bv_page), FAULT_IO)) {
f2fs_show_injection_info(FAULT_IO);
bio->bi_error = -EIO;
}
#endif
if (f2fs_bio_encrypted(bio)) {

4
fs/f2fs/dir.c
View File

@ -549,8 +549,10 @@ int f2fs_add_regular_entry(struct inode *dir, const struct qstr *new_name,
start:
#ifdef CONFIG_F2FS_FAULT_INJECTION
if (time_to_inject(F2FS_I_SB(dir), FAULT_DIR_DEPTH))
if (time_to_inject(F2FS_I_SB(dir), FAULT_DIR_DEPTH)) {
f2fs_show_injection_info(FAULT_DIR_DEPTH);
return -ENOSPC;
}
#endif
if (unlikely(current_depth == MAX_DIR_HASH_DEPTH))
return -ENOSPC;

20
fs/f2fs/f2fs.h
View File

@ -952,6 +952,10 @@ struct f2fs_sb_info {
};
#ifdef CONFIG_F2FS_FAULT_INJECTION
#define f2fs_show_injection_info(type) \
printk("%sF2FS-fs : inject %s in %s of %pF\n", \
KERN_INFO, fault_name[type], \
__func__, __builtin_return_address(0))
static inline bool time_to_inject(struct f2fs_sb_info *sbi, int type)
{
struct f2fs_fault_info *ffi = &sbi->fault_info;
@ -965,10 +969,6 @@ static inline bool time_to_inject(struct f2fs_sb_info *sbi, int type)
atomic_inc(&ffi->inject_ops);
if (atomic_read(&ffi->inject_ops) >= ffi->inject_rate) {
atomic_set(&ffi->inject_ops, 0);
printk("%sF2FS-fs : inject %s in %pF\n",
KERN_INFO,
fault_name[type],
__builtin_return_address(0));
return true;
}
return false;
@ -1277,8 +1277,10 @@ static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
blkcnt_t diff;
#ifdef CONFIG_F2FS_FAULT_INJECTION
if (time_to_inject(sbi, FAULT_BLOCK))
if (time_to_inject(sbi, FAULT_BLOCK)) {
f2fs_show_injection_info(FAULT_BLOCK);
return false;
}
#endif
/*
* let's increase this in prior to actual block count change in order
@ -1518,8 +1520,10 @@ static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
if (page)
return page;
if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_ALLOC))
if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_ALLOC)) {
f2fs_show_injection_info(FAULT_PAGE_ALLOC);
return NULL;
}
#endif
if (!for_write)
return grab_cache_page(mapping, index);
@ -1995,8 +1999,10 @@ static inline void *f2fs_kmalloc(struct f2fs_sb_info *sbi,
size_t size, gfp_t flags)
{
#ifdef CONFIG_F2FS_FAULT_INJECTION
if (time_to_inject(sbi, FAULT_KMALLOC))
if (time_to_inject(sbi, FAULT_KMALLOC)) {
f2fs_show_injection_info(FAULT_KMALLOC);
return NULL;
}
#endif
return kmalloc(size, flags);
}

4
fs/f2fs/gc.c
View File

@ -48,8 +48,10 @@ static int gc_thread_func(void *data)
}
#ifdef CONFIG_F2FS_FAULT_INJECTION
if (time_to_inject(sbi, FAULT_CHECKPOINT))
if (time_to_inject(sbi, FAULT_CHECKPOINT)) {
f2fs_show_injection_info(FAULT_CHECKPOINT);
f2fs_stop_checkpoint(sbi, false);
}
#endif
/*

4
fs/f2fs/inode.c
View File

@ -373,8 +373,10 @@ void f2fs_evict_inode(struct inode *inode)
goto no_delete;
#ifdef CONFIG_F2FS_FAULT_INJECTION
if (time_to_inject(sbi, FAULT_EVICT_INODE))
if (time_to_inject(sbi, FAULT_EVICT_INODE)) {
f2fs_show_injection_info(FAULT_EVICT_INODE);
goto no_delete;
}
#endif
remove_ino_entry(sbi, inode->i_ino, APPEND_INO);

4
fs/f2fs/node.c
View File

@ -1987,8 +1987,10 @@ bool alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid)
struct free_nid *i = NULL;
retry:
#ifdef CONFIG_F2FS_FAULT_INJECTION
if (time_to_inject(sbi, FAULT_ALLOC_NID))
if (time_to_inject(sbi, FAULT_ALLOC_NID)) {
f2fs_show_injection_info(FAULT_ALLOC_NID);
return false;
}
#endif
spin_lock(&nm_i->nid_list_lock);

4
fs/f2fs/segment.c
View File

@ -352,8 +352,10 @@ int commit_inmem_pages(struct inode *inode)
void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need)
{
#ifdef CONFIG_F2FS_FAULT_INJECTION
if (time_to_inject(sbi, FAULT_CHECKPOINT))
if (time_to_inject(sbi, FAULT_CHECKPOINT)) {
f2fs_show_injection_info(FAULT_CHECKPOINT);
f2fs_stop_checkpoint(sbi, false);
}
#endif
if (!need)