f2fs: inject fault to kvmalloc

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>

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 569d9fb..1320f72 100644 (file)
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -44,6 +44,7 @@
 #ifdef CONFIG_F2FS_FAULT_INJECTION
 enum {
        FAULT_KMALLOC,
+       FAULT_KVMALLOC,
        FAULT_PAGE_ALLOC,
        FAULT_PAGE_GET,
        FAULT_ALLOC_BIO,
@@ -2519,6 +2520,24 @@ 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 a5e96f8..260aeb0 100644 (file)
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -1082,11 +1082,13 @@ 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 f10f685..d833efc 100644 (file)
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -2729,17 +2729,17 @@ 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 19403f8..ac12f3d 100644 (file)
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -3425,13 +3425,14 @@ 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;
 
@@ -3465,7 +3466,7 @@ 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;
@@ -3516,12 +3517,12 @@ 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;
 
@@ -3701,7 +3702,7 @@ 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;
@@ -3724,7 +3725,8 @@ 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 037d222..17ac1c9 100644 (file)
--- 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",