diff options
| author | Chao Yu <yuchao0@huawei.com> | 2017-10-28 16:52:31 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2017-11-05 16:41:55 -0800 |
| commit | d62fe971485f15fa08fec2a75ac4e4ffead40a5a (patch) | |
| tree | 58ae71c7749736390d0fb975986ad2d3bd7bba0d /fs | |
| parent | 01eccef7930f137bed9501bf0923931f45909b94 (diff) | |
f2fs: support bio allocation error injection
This patch adds to support bio allocation error injection to simulate
out-of-memory test scenario.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/f2fs/data.c | 4 | ||||
| -rw-r--r-- | fs/f2fs/f2fs.h | 23 | ||||
| -rw-r--r-- | fs/f2fs/segment.c | 2 | ||||
| -rw-r--r-- | fs/f2fs/super.c | 1 |
4 files changed, 21 insertions, 9 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index acb531788c43..b0781edc9ada 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -173,7 +173,7 @@ static struct bio *__bio_alloc(struct f2fs_sb_info *sbi, block_t blk_addr, { struct bio *bio; - bio = f2fs_bio_alloc(npages); + bio = f2fs_bio_alloc(sbi, npages, true); f2fs_target_device(sbi, blk_addr, bio); bio->bi_end_io = is_read ? f2fs_read_end_io : f2fs_write_end_io; @@ -473,7 +473,7 @@ static struct bio *f2fs_grab_read_bio(struct inode *inode, block_t blkaddr, f2fs_wait_on_block_writeback(sbi, blkaddr); } - bio = bio_alloc(GFP_KERNEL, min_t(int, nr_pages, BIO_MAX_PAGES)); + bio = f2fs_bio_alloc(sbi, min_t(int, nr_pages, BIO_MAX_PAGES), false); if (!bio) { if (ctx) fscrypt_release_ctx(ctx); diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 7ef3193db438..d89728c946a9 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -47,6 +47,7 @@ enum { FAULT_KMALLOC, FAULT_PAGE_ALLOC, FAULT_PAGE_GET, + FAULT_ALLOC_BIO, FAULT_ALLOC_NID, FAULT_ORPHAN, FAULT_BLOCK, @@ -1898,15 +1899,25 @@ static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep, return entry; } -static inline struct bio *f2fs_bio_alloc(int npages) +static inline struct bio *f2fs_bio_alloc(struct f2fs_sb_info *sbi, + int npages, bool no_fail) { struct bio *bio; - /* No failure on bio allocation */ - bio = bio_alloc(GFP_NOIO, npages); - if (!bio) - bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages); - return bio; + if (no_fail) { + /* No failure on bio allocation */ + bio = bio_alloc(GFP_NOIO, npages); + if (!bio) + bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages); + return bio; + } +#ifdef CONFIG_F2FS_FAULT_INJECTION + if (time_to_inject(sbi, FAULT_ALLOC_BIO)) { + f2fs_show_injection_info(FAULT_ALLOC_BIO); + return NULL; + } +#endif + return bio_alloc(GFP_KERNEL, npages); } static inline void f2fs_radix_tree_insert(struct radix_tree_root *root, diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 46dfbca61b35..5c3293afeb8e 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -511,7 +511,7 @@ void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi) static int __submit_flush_wait(struct f2fs_sb_info *sbi, struct block_device *bdev) { - struct bio *bio = f2fs_bio_alloc(0); + struct bio *bio = f2fs_bio_alloc(sbi, 0, true); int ret; bio->bi_opf = REQ_OP_WRITE | REQ_SYNC | REQ_PREFLUSH; diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 4a5af8398f0c..96e145c34ba2 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -45,6 +45,7 @@ char *fault_name[FAULT_MAX] = { [FAULT_KMALLOC] = "kmalloc", [FAULT_PAGE_ALLOC] = "page alloc", [FAULT_PAGE_GET] = "page get", + [FAULT_ALLOC_BIO] = "alloc bio", [FAULT_ALLOC_NID] = "alloc nid", [FAULT_ORPHAN] = "orphan", [FAULT_BLOCK] = "no more block", |