[PATCH 6.7 567/713] f2fs: compress: fix to guarantee persisting compressed blocks by CP

Sasha Levin
2024-03-24T22:56:44Z

From: Chao Yu <chao@kernel.org>

[ Upstream commit 8a430dd49e9cb021372b0ad91e60aeef9c6ced00 ]

If data block in compressed cluster is not persisted with metadata
during checkpoint, after SPOR, the data may be corrupted, let's
guarantee to write compressed page by checkpoint.

Fixes: 4c8ff7095bef ("f2fs: support data compression")
Reviewed-by: Daeho Jeong <daehojeong@google.com>
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/f2fs/compress.c | 4 +++-
fs/f2fs/data.c | 17 +++++++++--------
fs/f2fs/f2fs.h | 4 +++-
3 files changed, 15 insertions(+), 10 deletions(-)

diff --git a/fs/f2fs/compress.c b/fs/f2fs/compress.c
index 62119f3f7206d..8453a06630208 100644
--- a/fs/f2fs/compress.c
+++ b/fs/f2fs/compress.c
@@ -1420,6 +1420,8 @@ void f2fs_compress_write_end_io(struct bio *bio, struct page *page)
struct f2fs_sb_info *sbi = bio->bi_private;
struct compress_io_ctx *cic =
(struct compress_io_ctx *)page_private(page);
+ enum count_type type = WB_DATA_TYPE(page,
+ f2fs_is_compressed_page(page));
int i;

if (unlikely(bio->bi_status))
@@ -1427,7 +1429,7 @@ void f2fs_compress_write_end_io(struct bio *bio, struct page *page)

f2fs_compress_free_page(page);

- dec_page_count(sbi, F2FS_WB_DATA);
+ dec_page_count(sbi, type);

if (atomic_dec_return(&cic->pending_pages))
return;
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index bc3f05d43b624..4b0c2ceb5dbfd 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -48,7 +48,7 @@ void f2fs_destroy_bioset(void)
bioset_exit(&f2fs_bioset);
}

-static bool __is_cp_guaranteed(struct page *page)
+bool f2fs_is_cp_guaranteed(struct page *page)
{
struct address_space *mapping = page->mapping;
struct inode *inode;
@@ -65,8 +65,6 @@ static bool __is_cp_guaranteed(struct page *page)
S_ISDIR(inode->i_mode))
return true;

- if (f2fs_is_compressed_page(page))
- return false;
if ((S_ISREG(inode->i_mode) && IS_NOQUOTA(inode)) ||
page_private_gcing(page))
return true;
@@ -338,7 +336,7 @@ static void f2fs_write_end_io(struct bio *bio)

bio_for_each_segment_all(bvec, bio, iter_all) {
struct page *page = bvec->bv_page;
- enum count_type type = WB_DATA_TYPE(page);
+ enum count_type type = WB_DATA_TYPE(page, false);

if (page_private_dummy(page)) {
clear_page_private_dummy(page);
@@ -762,7 +760,7 @@ int f2fs_submit_page_bio(struct f2fs_io_info *fio)
wbc_account_cgroup_owner(fio->io_wbc, fio->page, PAGE_SIZE);

inc_page_count(fio->sbi, is_read_io(fio->op) ?
- __read_io_type(page) : WB_DATA_TYPE(fio->page));
+ __read_io_type(page) : WB_DATA_TYPE(fio->page, false));

if (is_read_io(bio_op(bio)))
f2fs_submit_read_bio(fio->sbi, bio, fio->type);
@@ -973,7 +971,7 @@ int f2fs_merge_page_bio(struct f2fs_io_info *fio)
if (fio->io_wbc)
wbc_account_cgroup_owner(fio->io_wbc, fio->page, PAGE_SIZE);

- inc_page_count(fio->sbi, WB_DATA_TYPE(page));
+ inc_page_count(fio->sbi, WB_DATA_TYPE(page, false));

*fio->last_block = fio->new_blkaddr;
*fio->bio = bio;
@@ -1007,6 +1005,7 @@ void f2fs_submit_page_write(struct f2fs_io_info *fio)
enum page_type btype = PAGE_TYPE_OF_BIO(fio->type);
struct f2fs_bio_info *io = sbi->write_io[btype] + fio->temp;
struct page *bio_page;
+ enum count_type type;

f2fs_bug_on(sbi, is_read_io(fio->op));

@@ -1046,7 +1045,8 @@ void f2fs_submit_page_write(struct f2fs_io_info *fio)
/* set submitted = true as a return value */
fio->submitted = 1;

- inc_page_count(sbi, WB_DATA_TYPE(bio_page));
+ type = WB_DATA_TYPE(bio_page, fio->compressed_page);
+ inc_page_count(sbi, type);

if (io->bio &&
(!io_is_mergeable(sbi, io->bio, io, fio, io->last_block_in_bio,
@@ -1059,7 +1059,8 @@ void f2fs_submit_page_write(struct f2fs_io_info *fio)
if (F2FS_IO_ALIGNED(sbi) &&
(fio->type == DATA || fio->type == NODE) &&
fio->new_blkaddr & F2FS_IO_SIZE_MASK(sbi)) {
- dec_page_count(sbi, WB_DATA_TYPE(bio_page));
+ dec_page_count(sbi, WB_DATA_TYPE(bio_page,
+ fio->compressed_page));
fio->retry = 1;
goto skip;
}
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 46ad7604a8b62..2f899d54d1837 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1075,7 +1075,8 @@ struct f2fs_sm_info {
* f2fs monitors the number of several block types such as on-writeback,
* dirty dentry blocks, dirty node blocks, and dirty meta blocks.
*/
-#define WB_DATA_TYPE(p) (__is_cp_guaranteed(p) ? F2FS_WB_CP_DATA : F2FS_WB_DATA)
+#define WB_DATA_TYPE(p, f) \
+ (f || f2fs_is_cp_guaranteed(p) ? F2FS_WB_CP_DATA : F2FS_WB_DATA)
enum count_type {
F2FS_DIRTY_DENTS,
F2FS_DIRTY_DATA,
@@ -3797,6 +3798,7 @@ void f2fs_init_ckpt_req_control(struct f2fs_sb_info *sbi);
*/
int __init f2fs_init_bioset(void);
void f2fs_destroy_bioset(void);
+bool f2fs_is_cp_guaranteed(struct page *page);
int f2fs_init_bio_entry_cache(void);
void f2fs_destroy_bio_entry_cache(void);
void f2fs_submit_read_bio(struct f2fs_sb_info *sbi, struct bio *bio,
--
2.43.0