xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

BACKPORT: f2fs: invalidate meta pages only for post_read required inode

Browse Source 
After commit e3b49ea36802 ("f2fs: invalidate META_MAPPING before
IPU/DIO write"), invalidate_mapping_pages() will be called to
avoid race condition in between IPU/DIO and readahead for GC.

However, readahead flow is only used for post_read required inode,
so this patch adds check condition to avoids unnecessary page cache
invalidating for non-post_read inode.

Bug: 243874214

Signed-off-by: Chao Yu <chao.yu@oppo.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Chao Yu <chao@kernel.org>
(cherry picked from commit 0d5b9d8156396bbe1c982708b38ab9e188c45ec9)
Change-Id: I39a8da4183b59b34522f445d25d8ab9fd2d6319c
This commit is contained in:
Chao Yu
2022-08-31 14:18:54 +08:00
parent fa0cdb5b9d
commit 22b447e9bd
3 changed files with 12 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
fs/f2fs/data.c
View File

@@ -1490,12 +1490,9 @@ int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map,
*map->m_next_extent = pgofs + map->m_len;
/* for hardware encryption, but to avoid potential issue in future */
if (flag == F2FS_GET_BLOCK_DIO) {
if (flag == F2FS_GET_BLOCK_DIO)
f2fs_wait_on_block_writeback_range(inode,
map->m_pblk, map->m_len);
invalidate_mapping_pages(META_MAPPING(sbi),
map->m_pblk, map->m_pblk + map->m_len - 1);
}
goto out;
}
@@ -1672,12 +1669,9 @@ skip:
sync_out:
/* for hardware encryption, but to avoid potential issue in future */
if (flag == F2FS_GET_BLOCK_DIO && map->m_flags & F2FS_MAP_MAPPED) {
if (flag == F2FS_GET_BLOCK_DIO && map->m_flags & F2FS_MAP_MAPPED)
f2fs_wait_on_block_writeback_range(inode,
map->m_pblk, map->m_len);
invalidate_mapping_pages(META_MAPPING(sbi),
map->m_pblk, map->m_pblk + map->m_len - 1);
}
if (flag == F2FS_GET_BLOCK_PRECACHE) {
if (map->m_flags & F2FS_MAP_MAPPED) {
@@ -2720,6 +2714,7 @@ int f2fs_write_single_data_page(struct page *page, int *submitted,
.submitted = false,
.compr_blocks = compr_blocks,
.need_lock = LOCK_RETRY,
.post_read = f2fs_post_read_required(inode),
.io_type = io_type,
.io_wbc = wbc,
.bio = bio,

1
fs/f2fs/f2fs.h
View File

@@ -1161,6 +1161,7 @@ struct f2fs_io_info {
bool retry; /* need to reallocate block address */
int compr_blocks; /* # of compressed block addresses */
bool encrypted; /* indicate file is encrypted */
bool post_read; /* require post read */
enum iostat_type io_type; /* io type */
struct writeback_control *io_wbc; /* writeback control */
struct bio **bio; /* bio for ipu */

9
fs/f2fs/segment.c
View File

@@ -3568,7 +3568,8 @@ int f2fs_inplace_write_data(struct f2fs_io_info *fio)
goto drop_bio;
}
invalidate_mapping_pages(META_MAPPING(sbi),
if (fio->post_read)
invalidate_mapping_pages(META_MAPPING(sbi),
fio->new_blkaddr, fio->new_blkaddr);
stat_inc_inplace_blocks(fio->sbi);
@@ -3750,10 +3751,16 @@ void f2fs_wait_on_block_writeback(struct inode *inode, block_t blkaddr)
void f2fs_wait_on_block_writeback_range(struct inode *inode, block_t blkaddr,
block_t len)
{
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
block_t i;
if (!f2fs_post_read_required(inode))
return;
for (i = 0; i < len; i++)
f2fs_wait_on_block_writeback(inode, blkaddr + i);
invalidate_mapping_pages(META_MAPPING(sbi), blkaddr, blkaddr + len - 1);
}
static int read_compacted_summaries(struct f2fs_sb_info *sbi)