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f2fs: compress: don't handle non-compressed data in workqueue

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If bio has no compressed data, we don't need to handle end_io work in
workqueue, instead, it should just let interrupter handle it directly
to speed up IO response.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2020-04-21 19:36:21 +08:00 committed by Jaegeuk Kim
parent deaf160f8a
commit 03382f1aa9
1 changed files with 9 additions and 2 deletions
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11
fs/f2fs/data.c
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@ -114,7 +114,8 @@ static enum count_type __read_io_type(struct page *page)
/* postprocessing steps for read bios */
enum bio_post_read_step {
STEP_DECRYPT,
STEP_DECOMPRESS,
STEP_DECOMPRESS_NOWQ, /* handle normal cluster data inplace */
STEP_DECOMPRESS, /* handle compressed cluster data in workqueue */
STEP_VERITY,
};
@ -990,7 +991,7 @@ static struct bio *f2fs_grab_read_bio(struct inode *inode, block_t blkaddr,
if (f2fs_encrypted_file(inode))
post_read_steps |= 1 << STEP_DECRYPT;
if (f2fs_compressed_file(inode))
post_read_steps |= 1 << STEP_DECOMPRESS;
post_read_steps |= 1 << STEP_DECOMPRESS_NOWQ;
if (f2fs_need_verity(inode, first_idx))
post_read_steps |= 1 << STEP_VERITY;
@ -2189,6 +2190,7 @@ int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret,
for (i = 0; i < dic->nr_cpages; i++) {
struct page *page = dic->cpages[i];
block_t blkaddr;
struct bio_post_read_ctx *ctx;
blkaddr = data_blkaddr(dn.inode, dn.node_page,
dn.ofs_in_node + i + 1);
@ -2225,6 +2227,11 @@ submit_and_realloc:
if (bio_add_page(bio, page, blocksize, 0) < blocksize)
goto submit_and_realloc;
/* tag STEP_DECOMPRESS to handle IO in wq */
ctx = bio->bi_private;
if (!(ctx->enabled_steps & (1 << STEP_DECOMPRESS)))
ctx->enabled_steps |= 1 << STEP_DECOMPRESS;
inc_page_count(sbi, F2FS_RD_DATA);
f2fs_update_iostat(sbi, FS_DATA_READ_IO, F2FS_BLKSIZE);
ClearPageError(page);