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f2fs: inject page allocation failures 

This patch adds page allocation failures.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2016-04-29 16:17:09 -07:00
parent 2c63fead9e
commit c41f3cc3ae
2 changed files with 10 additions and 0 deletions
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9
fs/f2fs/f2fs.h
View File

@ -40,6 +40,7 @@
#ifdef CONFIG_F2FS_FAULT_INJECTION
enum {
FAULT_KMALLOC,
FAULT_PAGE_ALLOC,
FAULT_MAX,
};
@ -1296,6 +1297,14 @@ static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi)
static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
pgoff_t index, bool for_write)
{
#ifdef CONFIG_F2FS_FAULT_INJECTION
struct page *page = find_lock_page(mapping, index);
if (page)
return page;
if (time_to_inject(FAULT_PAGE_ALLOC))
return NULL;
#endif
if (!for_write)
return grab_cache_page(mapping, index);
return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);

1
fs/f2fs/super.c
View File

@ -45,6 +45,7 @@ atomic_t f2fs_ops;
char *fault_name[FAULT_MAX] = {
[FAULT_KMALLOC] = "kmalloc",
[FAULT_PAGE_ALLOC] = "page alloc",
};
#endif