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| author | Kent Overstreet <kmo@daterainc.com> | 2013-11-07 12:20:26 -0800 |
|---|---|---|
| committer | Kent Overstreet <kmo@daterainc.com> | 2013-11-23 22:33:46 -0800 |
| commit | 2c30c71bd653afcbed7f6754e8fe3d16e0e708a1 (patch) | |
| tree | a6b1147e4302b7216600c397cb47ca7f7f375a43 /fs/mpage.c | |
| parent | 33879d4512c021ae65be9706608dacb36b4687b1 (diff) | |
| download | linux-2c30c71bd653afcbed7f6754e8fe3d16e0e708a1.tar.bz2 | |
block: Convert various code to bio_for_each_segment()
With immutable biovecs we don't want code accessing bi_io_vec directly -
the uses this patch changes weren't incorrect since they all own the
bio, but it makes the code harder to audit for no good reason - also,
this will help with multipage bvecs later.
Signed-off-by: Kent Overstreet <kmo@daterainc.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Chris Mason <chris.mason@fusionio.com>
Cc: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Cc: Joern Engel <joern@logfs.org>
Cc: Prasad Joshi <prasadjoshi.linux@gmail.com>
Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/mpage.c')
| -rw-r--r-- | fs/mpage.c | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/fs/mpage.c b/fs/mpage.c index 0face1c4d4c6..dd6d5878f4d9 100644 --- a/fs/mpage.c +++ b/fs/mpage.c @@ -43,16 +43,14 @@ */ static void mpage_end_io(struct bio *bio, int err) { - const int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); - struct bio_vec *bvec = bio->bi_io_vec + bio->bi_vcnt - 1; + struct bio_vec *bv; + int i; - do { - struct page *page = bvec->bv_page; + bio_for_each_segment_all(bv, bio, i) { + struct page *page = bv->bv_page; - if (--bvec >= bio->bi_io_vec) - prefetchw(&bvec->bv_page->flags); if (bio_data_dir(bio) == READ) { - if (uptodate) { + if (!err) { SetPageUptodate(page); } else { ClearPageUptodate(page); @@ -60,14 +58,15 @@ static void mpage_end_io(struct bio *bio, int err) } unlock_page(page); } else { /* bio_data_dir(bio) == WRITE */ - if (!uptodate) { + if (err) { SetPageError(page); if (page->mapping) set_bit(AS_EIO, &page->mapping->flags); } end_page_writeback(page); } - } while (bvec >= bio->bi_io_vec); + } + bio_put(bio); } |