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authorChao Yu <yuchao0@huawei.com>2017-10-28 16:52:30 +0800
committerJaegeuk Kim <jaegeuk@kernel.org>2017-11-05 16:41:54 -0800
commit01eccef7930f137bed9501bf0923931f45909b94 (patch)
treec4f020222dd9e6b1949c4d2215af74f75d3e8f40 /fs/f2fs
parentb32d73abc6f0a63503f68a7227b1d46aff1f46af (diff)
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f2fs: support get_page error injection
This patch adds to support get_page 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/f2fs')
-rw-r--r--fs/f2fs/data.c2
-rw-r--r--fs/f2fs/f2fs.h14
-rw-r--r--fs/f2fs/gc.c4
-rw-r--r--fs/f2fs/node.c3
-rw-r--r--fs/f2fs/super.c1
5 files changed, 20 insertions, 4 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 7fd09837820a..acb531788c43 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1965,7 +1965,7 @@ repeat:
* Do not use grab_cache_page_write_begin() to avoid deadlock due to
* wait_for_stable_page. Will wait that below with our IO control.
*/
- page = pagecache_get_page(mapping, index,
+ page = f2fs_pagecache_get_page(mapping, index,
FGP_LOCK | FGP_WRITE | FGP_CREAT, GFP_NOFS);
if (!page) {
err = -ENOMEM;
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 5ed40fbd1a36..7ef3193db438 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -46,6 +46,7 @@
enum {
FAULT_KMALLOC,
FAULT_PAGE_ALLOC,
+ FAULT_PAGE_GET,
FAULT_ALLOC_NID,
FAULT_ORPHAN,
FAULT_BLOCK,
@@ -1835,6 +1836,19 @@ static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
}
+static inline struct page *f2fs_pagecache_get_page(
+ struct address_space *mapping, pgoff_t index,
+ int fgp_flags, gfp_t gfp_mask)
+{
+#ifdef CONFIG_F2FS_FAULT_INJECTION
+ if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_GET)) {
+ f2fs_show_injection_info(FAULT_PAGE_GET);
+ return NULL;
+ }
+#endif
+ return pagecache_get_page(mapping, index, fgp_flags, gfp_mask);
+}
+
static inline void f2fs_copy_page(struct page *src, struct page *dst)
{
char *src_kaddr = kmap(src);
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 197ebf45e4e4..c7b1d704846a 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -650,8 +650,8 @@ static void move_data_block(struct inode *inode, block_t bidx,
allocate_data_block(fio.sbi, NULL, fio.old_blkaddr, &newaddr,
&sum, CURSEG_COLD_DATA, NULL, false);
- fio.encrypted_page = pagecache_get_page(META_MAPPING(fio.sbi), newaddr,
- FGP_LOCK | FGP_CREAT, GFP_NOFS);
+ fio.encrypted_page = f2fs_pagecache_get_page(META_MAPPING(fio.sbi),
+ newaddr, FGP_LOCK | FGP_CREAT, GFP_NOFS);
if (!fio.encrypted_page) {
err = -ENOMEM;
goto recover_block;
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index f44d83705245..819671febd6d 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1218,7 +1218,8 @@ static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino)
if (!inode)
return;
- page = pagecache_get_page(inode->i_mapping, 0, FGP_LOCK|FGP_NOWAIT, 0);
+ page = f2fs_pagecache_get_page(inode->i_mapping, 0,
+ FGP_LOCK|FGP_NOWAIT, 0);
if (!page)
goto iput_out;
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index dab1fedf7148..4a5af8398f0c 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -44,6 +44,7 @@ static struct kmem_cache *f2fs_inode_cachep;
char *fault_name[FAULT_MAX] = {
[FAULT_KMALLOC] = "kmalloc",
[FAULT_PAGE_ALLOC] = "page alloc",
+ [FAULT_PAGE_GET] = "page get",
[FAULT_ALLOC_NID] = "alloc nid",
[FAULT_ORPHAN] = "orphan",
[FAULT_BLOCK] = "no more block",