Commit 32410577 authored by Chao Yu's avatar Chao Yu Committed by Jaegeuk Kim
Browse files

f2fs: support fault injection for f2fs_kmem_cache_alloc() 



This patch supports to inject fault into f2fs_kmem_cache_alloc().

Usage:
a) echo 32768 > /sys/fs/f2fs/<dev>/inject_type or
b) mount -o fault_type=32768 <dev> <mountpoint>

Signed-off-by: default avatarChao Yu <chao@kernel.org>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 4a4fc043

Documentation/filesystems/f2fs.rst

+1 −0
Original line number Diff line number Diff line
@@ -195,6 +195,7 @@ fault_type=%d Support configuring fault injection type, should be 
			 FAULT_CHECKPOINT	  0x000001000

			 FAULT_DISCARD		  0x000002000

			 FAULT_WRITE_IO		  0x000004000

			 FAULT_SLAB_ALLOC	  0x000008000

			 ===================	  ===========

mode=%s			 Control block allocation mode which supports "adaptive"

			 and "lfs". In "lfs" mode, there should be no random

fs/f2fs/checkpoint.c

+2 −1
Original line number Diff line number Diff line
@@ -475,7 +475,8 @@ static void __add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, 


retry:

	if (!e)

		new = f2fs_kmem_cache_alloc(ino_entry_slab, GFP_NOFS);

		new = f2fs_kmem_cache_alloc(ino_entry_slab,

						GFP_NOFS, true, NULL);



	radix_tree_preload(GFP_NOFS | __GFP_NOFAIL);

fs/f2fs/compress.c

+5 −3
Original line number Diff line number Diff line
@@ -28,7 +28,8 @@ static void *page_array_alloc(struct inode *inode, int nr) 
	unsigned int size = sizeof(struct page *) * nr;



	if (likely(size <= sbi->page_array_slab_size))

		return kmem_cache_zalloc(sbi->page_array_slab, GFP_NOFS);

		return f2fs_kmem_cache_alloc(sbi->page_array_slab,

					GFP_F2FS_ZERO, false, F2FS_I_SB(inode));

	return f2fs_kzalloc(sbi, size, GFP_NOFS);

}
@@ -1228,7 +1229,7 @@ static int f2fs_write_compressed_pages(struct compress_ctx *cc, 


	fio.version = ni.version;



	cic = kmem_cache_zalloc(cic_entry_slab, GFP_NOFS);

	cic = f2fs_kmem_cache_alloc(cic_entry_slab, GFP_F2FS_ZERO, false, sbi);

	if (!cic)

		goto out_put_dnode;
@@ -1506,7 +1507,8 @@ struct decompress_io_ctx *f2fs_alloc_dic(struct compress_ctx *cc) 
	pgoff_t start_idx = start_idx_of_cluster(cc);

	int i;



	dic = kmem_cache_zalloc(dic_entry_slab, GFP_NOFS);

	dic = f2fs_kmem_cache_alloc(dic_entry_slab, GFP_F2FS_ZERO,

					false, F2FS_I_SB(cc->inode));

	if (!dic)

		return ERR_PTR(-ENOMEM);

fs/f2fs/data.c

+1 −1
Original line number Diff line number Diff line
@@ -724,7 +724,7 @@ static void add_bio_entry(struct f2fs_sb_info *sbi, struct bio *bio, 
	struct f2fs_bio_info *io = sbi->write_io[DATA] + temp;

	struct bio_entry *be;



	be = f2fs_kmem_cache_alloc(bio_entry_slab, GFP_NOFS);

	be = f2fs_kmem_cache_alloc(bio_entry_slab, GFP_NOFS, true, NULL);

	be->bio = bio;

	bio_get(bio);

fs/f2fs/dir.c

+2 −2
Original line number Diff line number Diff line
@@ -83,8 +83,8 @@ int f2fs_init_casefolded_name(const struct inode *dir, 
	struct super_block *sb = dir->i_sb;



	if (IS_CASEFOLDED(dir)) {

		fname->cf_name.name = kmem_cache_alloc(f2fs_cf_name_slab,

								GFP_NOFS);

		fname->cf_name.name = f2fs_kmem_cache_alloc(f2fs_cf_name_slab,

					GFP_NOFS, false, F2FS_SB(sb));

		if (!fname->cf_name.name)

			return -ENOMEM;

		fname->cf_name.len = utf8_casefold(sb->s_encoding,