diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-10-20 00:10:27 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-10-20 00:10:27 -0300 |
commit | d0b2f91bede3bd5e3d24dd6803e56eee959c1797 (patch) | |
tree | 7fee4ab0509879c373c4f2cbd5b8a5be5b4041ee /fs/mpage.c | |
parent | e914f8eb445e8f74b00303c19c2ffceaedd16a05 (diff) |
Linux-libre 4.8.2-gnupck-4.8.2-gnu
Diffstat (limited to 'fs/mpage.c')
-rw-r--r-- | fs/mpage.c | 46 |
1 files changed, 25 insertions, 21 deletions
diff --git a/fs/mpage.c b/fs/mpage.c index bcbdb61b2..d6f1afe33 100644 --- a/fs/mpage.c +++ b/fs/mpage.c @@ -50,17 +50,18 @@ static void mpage_end_io(struct bio *bio) bio_for_each_segment_all(bv, bio, i) { struct page *page = bv->bv_page; - page_endio(page, bio_data_dir(bio), bio->bi_error); + page_endio(page, op_is_write(bio_op(bio)), bio->bi_error); } bio_put(bio); } -static struct bio *mpage_bio_submit(int rw, struct bio *bio) +static struct bio *mpage_bio_submit(int op, int op_flags, struct bio *bio) { bio->bi_end_io = mpage_end_io; - guard_bio_eod(rw, bio); - submit_bio(rw, bio); + bio_set_op_attrs(bio, op, op_flags); + guard_bio_eod(op, bio); + submit_bio(bio); return NULL; } @@ -71,6 +72,8 @@ mpage_alloc(struct block_device *bdev, { struct bio *bio; + /* Restrict the given (page cache) mask for slab allocations */ + gfp_flags &= GFP_KERNEL; bio = bio_alloc(gfp_flags, nr_vecs); if (bio == NULL && (current->flags & PF_MEMALLOC)) { @@ -269,7 +272,7 @@ do_mpage_readpage(struct bio *bio, struct page *page, unsigned nr_pages, * This page will go to BIO. Do we need to send this BIO off first? */ if (bio && (*last_block_in_bio != blocks[0] - 1)) - bio = mpage_bio_submit(READ, bio); + bio = mpage_bio_submit(REQ_OP_READ, 0, bio); alloc_new: if (bio == NULL) { @@ -286,7 +289,7 @@ alloc_new: length = first_hole << blkbits; if (bio_add_page(bio, page, length, 0) < length) { - bio = mpage_bio_submit(READ, bio); + bio = mpage_bio_submit(REQ_OP_READ, 0, bio); goto alloc_new; } @@ -294,7 +297,7 @@ alloc_new: nblocks = map_bh->b_size >> blkbits; if ((buffer_boundary(map_bh) && relative_block == nblocks) || (first_hole != blocks_per_page)) - bio = mpage_bio_submit(READ, bio); + bio = mpage_bio_submit(REQ_OP_READ, 0, bio); else *last_block_in_bio = blocks[blocks_per_page - 1]; out: @@ -302,7 +305,7 @@ out: confused: if (bio) - bio = mpage_bio_submit(READ, bio); + bio = mpage_bio_submit(REQ_OP_READ, 0, bio); if (!PageUptodate(page)) block_read_full_page(page, get_block); else @@ -362,7 +365,7 @@ mpage_readpages(struct address_space *mapping, struct list_head *pages, sector_t last_block_in_bio = 0; struct buffer_head map_bh; unsigned long first_logical_block = 0; - gfp_t gfp = mapping_gfp_constraint(mapping, GFP_KERNEL); + gfp_t gfp = readahead_gfp_mask(mapping); map_bh.b_state = 0; map_bh.b_size = 0; @@ -384,7 +387,7 @@ mpage_readpages(struct address_space *mapping, struct list_head *pages, } BUG_ON(!list_empty(pages)); if (bio) - mpage_bio_submit(READ, bio); + mpage_bio_submit(REQ_OP_READ, 0, bio); return 0; } EXPORT_SYMBOL(mpage_readpages); @@ -405,7 +408,7 @@ int mpage_readpage(struct page *page, get_block_t get_block) bio = do_mpage_readpage(bio, page, 1, &last_block_in_bio, &map_bh, &first_logical_block, get_block, gfp); if (bio) - mpage_bio_submit(READ, bio); + mpage_bio_submit(REQ_OP_READ, 0, bio); return 0; } EXPORT_SYMBOL(mpage_readpage); @@ -486,6 +489,7 @@ static int __mpage_writepage(struct page *page, struct writeback_control *wbc, struct buffer_head map_bh; loff_t i_size = i_size_read(inode); int ret = 0; + int op_flags = wbc_to_write_flags(wbc); if (page_has_buffers(page)) { struct buffer_head *head = page_buffers(page); @@ -594,7 +598,7 @@ page_is_mapped: * This page will go to BIO. Do we need to send this BIO off first? */ if (bio && mpd->last_block_in_bio != blocks[0] - 1) - bio = mpage_bio_submit(wbc_to_write_cmd(wbc), bio); + bio = mpage_bio_submit(REQ_OP_WRITE, op_flags, bio); alloc_new: if (bio == NULL) { @@ -621,7 +625,7 @@ alloc_new: wbc_account_io(wbc, page, PAGE_SIZE); length = first_unmapped << blkbits; if (bio_add_page(bio, page, length, 0) < length) { - bio = mpage_bio_submit(wbc_to_write_cmd(wbc), bio); + bio = mpage_bio_submit(REQ_OP_WRITE, op_flags, bio); goto alloc_new; } @@ -631,7 +635,7 @@ alloc_new: set_page_writeback(page); unlock_page(page); if (boundary || (first_unmapped != blocks_per_page)) { - bio = mpage_bio_submit(wbc_to_write_cmd(wbc), bio); + bio = mpage_bio_submit(REQ_OP_WRITE, op_flags, bio); if (boundary_block) { write_boundary_block(boundary_bdev, boundary_block, 1 << blkbits); @@ -643,7 +647,7 @@ alloc_new: confused: if (bio) - bio = mpage_bio_submit(wbc_to_write_cmd(wbc), bio); + bio = mpage_bio_submit(REQ_OP_WRITE, op_flags, bio); if (mpd->use_writepage) { ret = mapping->a_ops->writepage(page, wbc); @@ -700,9 +704,9 @@ mpage_writepages(struct address_space *mapping, ret = write_cache_pages(mapping, wbc, __mpage_writepage, &mpd); if (mpd.bio) { - int wr = (wbc->sync_mode == WB_SYNC_ALL ? - WRITE_SYNC : WRITE); - mpage_bio_submit(wr, mpd.bio); + int op_flags = (wbc->sync_mode == WB_SYNC_ALL ? + WRITE_SYNC : 0); + mpage_bio_submit(REQ_OP_WRITE, op_flags, mpd.bio); } } blk_finish_plug(&plug); @@ -721,9 +725,9 @@ int mpage_writepage(struct page *page, get_block_t get_block, }; int ret = __mpage_writepage(page, wbc, &mpd); if (mpd.bio) { - int wr = (wbc->sync_mode == WB_SYNC_ALL ? - WRITE_SYNC : WRITE); - mpage_bio_submit(wr, mpd.bio); + int op_flags = (wbc->sync_mode == WB_SYNC_ALL ? + WRITE_SYNC : 0); + mpage_bio_submit(REQ_OP_WRITE, op_flags, mpd.bio); } return ret; } |