diff options
| author | Daeho Jeong <daehojeong@google.com> | 2022-07-18 16:02:48 -0700 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2022-07-30 20:17:07 -0700 |
| commit | f8e2f32bcde5945e8f8dbb8714178c24d221366b (patch) | |
| tree | e9360e5772e2b6bc6d04a4c3c72f85a8f716a62b /fs/f2fs/data.c | |
| parent | 1adaa71ea9bff3a0ca0b37eabbb7f89225b595cb (diff) | |
f2fs: introduce sysfs atomic write statistics
introduce the below 4 new sysfs node for atomic write statistics.
- current_atomic_write: the total current atomic write block count,
which is not committed yet.
- peak_atomic_write: the peak value of total current atomic write block
count after boot.
- committed_atomic_block: the accumulated total committed atomic write
block count after boot.
- revoked_atomic_block: the accumulated total revoked atomic write block
count after boot.
Signed-off-by: Daeho Jeong <daehojeong@google.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/data.c')
| -rw-r--r-- | fs/f2fs/data.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index de140afc42c1..b3dbe77f902b 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -3406,12 +3406,11 @@ static int prepare_atomic_write_begin(struct f2fs_sb_info *sbi, struct inode *cow_inode = F2FS_I(inode)->cow_inode; pgoff_t index = page->index; int err = 0; - block_t ori_blk_addr; + block_t ori_blk_addr = NULL_ADDR; /* If pos is beyond the end of file, reserve a new block in COW inode */ if ((pos & PAGE_MASK) >= i_size_read(inode)) - return __reserve_data_block(cow_inode, index, blk_addr, - node_changed); + goto reserve_block; /* Look for the block in COW inode first */ err = __find_data_block(cow_inode, index, blk_addr); @@ -3425,10 +3424,12 @@ static int prepare_atomic_write_begin(struct f2fs_sb_info *sbi, if (err) return err; +reserve_block: /* Finally, we should reserve a new block in COW inode for the update */ err = __reserve_data_block(cow_inode, index, blk_addr, node_changed); if (err) return err; + inc_atomic_write_cnt(inode); if (ori_blk_addr != NULL_ADDR) *blk_addr = ori_blk_addr; |