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f2fs: introduce FAULT_VMALLOC

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Introduce a new fault type FAULT_VMALLOC to simulate no memory error in
f2fs_vmalloc().

Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2025-05-13 13:57:21 +08:00 committed by Jaegeuk Kim
parent 70dd07c888
commit 54ca9be0bc
5 changed files with 13 additions and 5 deletions
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1
Documentation/ABI/testing/sysfs-fs-f2fs
View File

@ -736,6 +736,7 @@ Description: Support configuring fault injection type, should be
FAULT_NO_SEGMENT 0x00100000
FAULT_INCONSISTENT_FOOTER 0x00200000
FAULT_TIMEOUT 0x00400000 (1000ms)
FAULT_VMALLOC 0x00800000
=========================== ==========
What: /sys/fs/f2fs/<disk>/discard_io_aware_gran

1
Documentation/filesystems/f2fs.rst
View File

@ -208,6 +208,7 @@ fault_type=%d Support configuring fault injection type, should be
FAULT_NO_SEGMENT 0x00100000
FAULT_INCONSISTENT_FOOTER 0x00200000
FAULT_TIMEOUT 0x00400000 (1000ms)
FAULT_VMALLOC 0x00800000
=========================== ==========
mode=%s Control block allocation mode which supports "adaptive"
and "lfs". In "lfs" mode, there should be no random

9
fs/f2fs/compress.c
View File

@ -180,7 +180,8 @@ void f2fs_compress_ctx_add_page(struct compress_ctx *cc, struct folio *folio)
#ifdef CONFIG_F2FS_FS_LZO
static int lzo_init_compress_ctx(struct compress_ctx *cc)
{
cc->private = f2fs_vmalloc(LZO1X_MEM_COMPRESS);
cc->private = f2fs_vmalloc(F2FS_I_SB(cc->inode),
LZO1X_MEM_COMPRESS);
if (!cc->private)
return -ENOMEM;
@ -247,7 +248,7 @@ static int lz4_init_compress_ctx(struct compress_ctx *cc)
size = LZ4HC_MEM_COMPRESS;
#endif
cc->private = f2fs_vmalloc(size);
cc->private = f2fs_vmalloc(F2FS_I_SB(cc->inode), size);
if (!cc->private)
return -ENOMEM;
@ -343,7 +344,7 @@ static int zstd_init_compress_ctx(struct compress_ctx *cc)
params = zstd_get_params(level, cc->rlen);
workspace_size = zstd_cstream_workspace_bound(&params.cParams);
workspace = f2fs_vmalloc(workspace_size);
workspace = f2fs_vmalloc(F2FS_I_SB(cc->inode), workspace_size);
if (!workspace)
return -ENOMEM;
@ -423,7 +424,7 @@ static int zstd_init_decompress_ctx(struct decompress_io_ctx *dic)
workspace_size = zstd_dstream_workspace_bound(max_window_size);
workspace = f2fs_vmalloc(workspace_size);
workspace = f2fs_vmalloc(F2FS_I_SB(dic->inode), workspace_size);
if (!workspace)
return -ENOMEM;

6
fs/f2fs/f2fs.h
View File

@ -64,6 +64,7 @@ enum {
FAULT_NO_SEGMENT,
FAULT_INCONSISTENT_FOOTER,
FAULT_TIMEOUT,
FAULT_VMALLOC,
FAULT_MAX,
};
@ -3532,8 +3533,11 @@ static inline void *f2fs_kvzalloc(struct f2fs_sb_info *sbi,
return f2fs_kvmalloc(sbi, size, flags | __GFP_ZERO);
}
static inline void *f2fs_vmalloc(size_t size)
static inline void *f2fs_vmalloc(struct f2fs_sb_info *sbi, size_t size)
{
if (time_to_inject(sbi, FAULT_VMALLOC))
return NULL;
return vmalloc(size);
}

1
fs/f2fs/super.c
View File

@ -66,6 +66,7 @@ const char *f2fs_fault_name[FAULT_MAX] = {
[FAULT_NO_SEGMENT] = "no free segment",
[FAULT_INCONSISTENT_FOOTER] = "inconsistent footer",
[FAULT_TIMEOUT] = "timeout",
[FAULT_VMALLOC] = "vmalloc",
};
int f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned long rate,