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f2fs: inject fault to kvmalloc

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This patch supports to inject fault into kvmalloc/kvzalloc.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2017-11-30 19:28:18 +08:00 committed by Jaegeuk Kim
parent acbf054d53
commit 628b3d1438
5 changed files with 36 additions and 12 deletions
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19
fs/f2fs/f2fs.h
View File

@ -43,6 +43,7 @@
#ifdef CONFIG_F2FS_FAULT_INJECTION
enum {
FAULT_KMALLOC,
FAULT_KVMALLOC,
FAULT_PAGE_ALLOC,
FAULT_PAGE_GET,
FAULT_ALLOC_BIO,
@ -2428,6 +2429,24 @@ static inline void *f2fs_kzalloc(struct f2fs_sb_info *sbi,
return f2fs_kmalloc(sbi, size, flags | __GFP_ZERO);
}
static inline void *f2fs_kvmalloc(struct f2fs_sb_info *sbi,
size_t size, gfp_t flags)
{
#ifdef CONFIG_F2FS_FAULT_INJECTION
if (time_to_inject(sbi, FAULT_KVMALLOC)) {
f2fs_show_injection_info(FAULT_KVMALLOC);
return NULL;
}
#endif
return kvmalloc(size, flags);
}
static inline void *f2fs_kvzalloc(struct f2fs_sb_info *sbi,
size_t size, gfp_t flags)
{
return f2fs_kvmalloc(sbi, size, flags | __GFP_ZERO);
}
static inline int get_extra_isize(struct inode *inode)
{
return F2FS_I(inode)->i_extra_isize / sizeof(__le32);

6
fs/f2fs/file.c
View File

@ -1098,11 +1098,13 @@ static int __exchange_data_block(struct inode *src_inode,
while (len) {
olen = min((pgoff_t)4 * ADDRS_PER_BLOCK, len);
src_blkaddr = kvzalloc(sizeof(block_t) * olen, GFP_KERNEL);
src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode),
sizeof(block_t) * olen, GFP_KERNEL);
if (!src_blkaddr)
return -ENOMEM;
do_replace = kvzalloc(sizeof(int) * olen, GFP_KERNEL);
do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode),
sizeof(int) * olen, GFP_KERNEL);
if (!do_replace) {
kvfree(src_blkaddr);
return -ENOMEM;

6
fs/f2fs/node.c
View File

@ -2707,17 +2707,17 @@ static int init_free_nid_cache(struct f2fs_sb_info *sbi)
{
struct f2fs_nm_info *nm_i = NM_I(sbi);
nm_i->free_nid_bitmap = kvzalloc(nm_i->nat_blocks *
nm_i->free_nid_bitmap = f2fs_kvzalloc(sbi, nm_i->nat_blocks *
NAT_ENTRY_BITMAP_SIZE, GFP_KERNEL);
if (!nm_i->free_nid_bitmap)
return -ENOMEM;
nm_i->nat_block_bitmap = kvzalloc(nm_i->nat_blocks / 8,
nm_i->nat_block_bitmap = f2fs_kvzalloc(sbi, nm_i->nat_blocks / 8,
GFP_KERNEL);
if (!nm_i->nat_block_bitmap)
return -ENOMEM;
nm_i->free_nid_count = kvzalloc(nm_i->nat_blocks *
nm_i->free_nid_count = f2fs_kvzalloc(sbi, nm_i->nat_blocks *
sizeof(unsigned short), GFP_KERNEL);
if (!nm_i->free_nid_count)
return -ENOMEM;

16
fs/f2fs/segment.c
View File

@ -3344,13 +3344,14 @@ static int build_sit_info(struct f2fs_sb_info *sbi)
SM_I(sbi)->sit_info = sit_i;
sit_i->sentries = kvzalloc(MAIN_SEGS(sbi) *
sit_i->sentries = f2fs_kvzalloc(sbi, MAIN_SEGS(sbi) *
sizeof(struct seg_entry), GFP_KERNEL);
if (!sit_i->sentries)
return -ENOMEM;
bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi));
sit_i->dirty_sentries_bitmap = kvzalloc(bitmap_size, GFP_KERNEL);
sit_i->dirty_sentries_bitmap = f2fs_kvzalloc(sbi, bitmap_size,
GFP_KERNEL);
if (!sit_i->dirty_sentries_bitmap)
return -ENOMEM;
@ -3384,7 +3385,7 @@ static int build_sit_info(struct f2fs_sb_info *sbi)
return -ENOMEM;
if (sbi->segs_per_sec > 1) {
sit_i->sec_entries = kvzalloc(MAIN_SECS(sbi) *
sit_i->sec_entries = f2fs_kvzalloc(sbi, MAIN_SECS(sbi) *
sizeof(struct sec_entry), GFP_KERNEL);
if (!sit_i->sec_entries)
return -ENOMEM;
@ -3435,12 +3436,12 @@ static int build_free_segmap(struct f2fs_sb_info *sbi)
SM_I(sbi)->free_info = free_i;
bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi));
free_i->free_segmap = kvmalloc(bitmap_size, GFP_KERNEL);
free_i->free_segmap = f2fs_kvmalloc(sbi, bitmap_size, GFP_KERNEL);
if (!free_i->free_segmap)
return -ENOMEM;
sec_bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi));
free_i->free_secmap = kvmalloc(sec_bitmap_size, GFP_KERNEL);
free_i->free_secmap = f2fs_kvmalloc(sbi, sec_bitmap_size, GFP_KERNEL);
if (!free_i->free_secmap)
return -ENOMEM;
@ -3620,7 +3621,7 @@ static int init_victim_secmap(struct f2fs_sb_info *sbi)
struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
unsigned int bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi));
dirty_i->victim_secmap = kvzalloc(bitmap_size, GFP_KERNEL);
dirty_i->victim_secmap = f2fs_kvzalloc(sbi, bitmap_size, GFP_KERNEL);
if (!dirty_i->victim_secmap)
return -ENOMEM;
return 0;
@ -3643,7 +3644,8 @@ static int build_dirty_segmap(struct f2fs_sb_info *sbi)
bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi));
for (i = 0; i < NR_DIRTY_TYPE; i++) {
dirty_i->dirty_segmap[i] = kvzalloc(bitmap_size, GFP_KERNEL);
dirty_i->dirty_segmap[i] = f2fs_kvzalloc(sbi, bitmap_size,
GFP_KERNEL);
if (!dirty_i->dirty_segmap[i])
return -ENOMEM;
}

1
fs/f2fs/super.c
View File

@ -43,6 +43,7 @@ static struct kmem_cache *f2fs_inode_cachep;
char *fault_name[FAULT_MAX] = {
[FAULT_KMALLOC] = "kmalloc",
[FAULT_KVMALLOC] = "kvmalloc",
[FAULT_PAGE_ALLOC] = "page alloc",
[FAULT_PAGE_GET] = "page get",
[FAULT_ALLOC_BIO] = "alloc bio",