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Date: Thu, 30 Nov 2017 19:28:18 +0800
From: Chao Yu <yuchao0@...wei.com>
To: <jaegeuk@...nel.org>
CC: <linux-f2fs-devel@...ts.sourceforge.net>,
<linux-kernel@...r.kernel.org>, <chao@...nel.org>,
Chao Yu <yuchao0@...wei.com>
Subject: [PATCH 2/7] f2fs: inject fault to kvmalloc
This patch supports to inject fault into kvmalloc/kvzalloc.
Signed-off-by: Chao Yu <yuchao0@...wei.com>
---
fs/f2fs/f2fs.h | 19 +++++++++++++++++++
fs/f2fs/file.c | 6 ++++--
fs/f2fs/node.c | 6 +++---
fs/f2fs/segment.c | 16 +++++++++-------
fs/f2fs/super.c | 1 +
5 files changed, 36 insertions(+), 12 deletions(-)
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 1b714d17d689..f6477aa76ba9 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -45,6 +45,7 @@
#ifdef CONFIG_F2FS_FAULT_INJECTION
enum {
FAULT_KMALLOC,
+ FAULT_KVMALLOC,
FAULT_PAGE_ALLOC,
FAULT_PAGE_GET,
FAULT_ALLOC_BIO,
@@ -2431,6 +2432,24 @@ 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);
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index c952eebe3b16..6723d48819e9 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -1113,11 +1113,13 @@ 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;
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 2d6da4f26b83..80c37a094631 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -2726,17 +2726,17 @@ 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;
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index e665a227b2c9..ce6bf4290dbe 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -3385,13 +3385,14 @@ 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;
@@ -3425,7 +3426,7 @@ 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;
@@ -3476,12 +3477,12 @@ 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;
@@ -3661,7 +3662,7 @@ 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;
@@ -3684,7 +3685,8 @@ 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;
}
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 26538ee1c143..dca579b7fd50 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -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",
--
2.15.0.55.gc2ece9dc4de6
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