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f2fs: support fault injection for f2fs_kmem_cache_alloc()

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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: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu
2021-08-09 08:24:48 +08:00
committed by Jaegeuk Kim
parent 1a1aa8a51c
commit 8766fdd083
13 changed files with 59 additions and 30 deletions
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5
fs/f2fs/extent_cache.c
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@@ -239,7 +239,7 @@ static struct extent_node *__attach_extent_node(struct f2fs_sb_info *sbi,
{
struct extent_node *en;
en = kmem_cache_alloc(extent_node_slab, GFP_ATOMIC);
en = f2fs_kmem_cache_alloc(extent_node_slab, GFP_ATOMIC, false, sbi);
if (!en)
return NULL;
@@ -292,7 +292,8 @@ static struct extent_tree *__grab_extent_tree(struct inode *inode)
mutex_lock(&sbi->extent_tree_lock);
et = radix_tree_lookup(&sbi->extent_tree_root, ino);
if (!et) {
et = f2fs_kmem_cache_alloc(extent_tree_slab, GFP_NOFS);
et = f2fs_kmem_cache_alloc(extent_tree_slab,
GFP_NOFS, true, NULL);
f2fs_radix_tree_insert(&sbi->extent_tree_root, ino, et);
memset(et, 0, sizeof(struct extent_tree));
et->ino = ino;