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Commit c41f3cc3 authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

f2fs: inject page allocation failures 



This patch adds page allocation failures.

Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 2c63fead

fs/f2fs/f2fs.h

+9 −0
Original line number Diff line number Diff line
@@ -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);

fs/f2fs/super.c

+1 −0
Original line number Diff line number Diff line
@@ -45,6 +45,7 @@ atomic_t f2fs_ops; 


char *fault_name[FAULT_MAX] = {

	[FAULT_KMALLOC]		= "kmalloc",

	[FAULT_PAGE_ALLOC]	= "page alloc",

};

#endif