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| author | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2014-02-03 10:50:22 +0900 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2014-02-17 14:58:52 +0900 |
| commit | 1b1f559fc362f96869b7e04ef9825b1039b9a67d (patch) | |
| tree | 27587baf23c768fdd26dfdc615959bb6f243bd19 /fs/f2fs/data.c | |
| parent | abb2366c82c3d2dac3d7e9a74332137da8fc9399 (diff) | |
| download | lwn-1b1f559fc362f96869b7e04ef9825b1039b9a67d.tar.gz lwn-1b1f559fc362f96869b7e04ef9825b1039b9a67d.zip | |
f2fs: remove the ugly pointer conversion
This patch modifies the use of bi_private to remove pointer chasing for sbi.
Previously, we had a bi_private structure, but it needs memory allocation.
So this patch uses bi_private by the sbi pointer and adds a completion pointer
into the sbi.
This can achieve no memory allocation and nice use of the bi_private.
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'fs/f2fs/data.c')
| -rw-r--r-- | fs/f2fs/data.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 20c3c648e56d..d175ae3b612a 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -45,7 +45,7 @@ static void f2fs_read_end_io(struct bio *bio, int err) static void f2fs_write_end_io(struct bio *bio, int err) { - struct f2fs_sb_info *sbi = F2FS_SB(bio->bi_io_vec->bv_page->mapping->host->i_sb); + struct f2fs_sb_info *sbi = bio->bi_private; struct bio_vec *bvec; int i; @@ -61,8 +61,10 @@ static void f2fs_write_end_io(struct bio *bio, int err) dec_page_count(sbi, F2FS_WRITEBACK); } - if (bio->bi_private) - complete(bio->bi_private); + if (sbi->wait_io) { + complete(sbi->wait_io); + sbi->wait_io = NULL; + } if (!get_pages(sbi, F2FS_WRITEBACK) && !list_empty(&sbi->cp_wait.task_list)) @@ -85,6 +87,7 @@ static struct bio *__bio_alloc(struct f2fs_sb_info *sbi, block_t blk_addr, bio->bi_bdev = sbi->sb->s_bdev; bio->bi_iter.bi_sector = SECTOR_FROM_BLOCK(sbi, blk_addr); bio->bi_end_io = is_read ? f2fs_read_end_io : f2fs_write_end_io; + bio->bi_private = sbi; return bio; } @@ -112,7 +115,7 @@ static void __submit_merged_bio(struct f2fs_bio_info *io) */ if (fio->type == META_FLUSH) { DECLARE_COMPLETION_ONSTACK(wait); - io->bio->bi_private = &wait; + io->sbi->wait_io = &wait; submit_bio(rw, io->bio); wait_for_completion(&wait); } else { |