fs: add support for buffered writeback to pass down write hints
Reviewed-by: Andreas Dilger <adilger@dilger.ca> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>zero-colors
parent
45d06cf701
commit
8e8f929881
13
fs/buffer.c
13
fs/buffer.c
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@ -49,7 +49,7 @@
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static int fsync_buffers_list(spinlock_t *lock, struct list_head *list);
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static int fsync_buffers_list(spinlock_t *lock, struct list_head *list);
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static int submit_bh_wbc(int op, int op_flags, struct buffer_head *bh,
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static int submit_bh_wbc(int op, int op_flags, struct buffer_head *bh,
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struct writeback_control *wbc);
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enum rw_hint hint, struct writeback_control *wbc);
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#define BH_ENTRY(list) list_entry((list), struct buffer_head, b_assoc_buffers)
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#define BH_ENTRY(list) list_entry((list), struct buffer_head, b_assoc_buffers)
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@ -1829,7 +1829,8 @@ int __block_write_full_page(struct inode *inode, struct page *page,
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do {
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do {
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struct buffer_head *next = bh->b_this_page;
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struct buffer_head *next = bh->b_this_page;
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if (buffer_async_write(bh)) {
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if (buffer_async_write(bh)) {
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submit_bh_wbc(REQ_OP_WRITE, write_flags, bh, wbc);
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submit_bh_wbc(REQ_OP_WRITE, write_flags, bh,
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inode->i_write_hint, wbc);
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nr_underway++;
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nr_underway++;
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}
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}
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bh = next;
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bh = next;
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@ -1883,7 +1884,8 @@ recover:
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struct buffer_head *next = bh->b_this_page;
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struct buffer_head *next = bh->b_this_page;
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if (buffer_async_write(bh)) {
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if (buffer_async_write(bh)) {
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clear_buffer_dirty(bh);
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clear_buffer_dirty(bh);
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submit_bh_wbc(REQ_OP_WRITE, write_flags, bh, wbc);
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submit_bh_wbc(REQ_OP_WRITE, write_flags, bh,
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inode->i_write_hint, wbc);
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nr_underway++;
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nr_underway++;
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}
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}
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bh = next;
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bh = next;
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@ -3091,7 +3093,7 @@ void guard_bio_eod(int op, struct bio *bio)
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}
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}
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static int submit_bh_wbc(int op, int op_flags, struct buffer_head *bh,
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static int submit_bh_wbc(int op, int op_flags, struct buffer_head *bh,
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struct writeback_control *wbc)
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enum rw_hint write_hint, struct writeback_control *wbc)
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{
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{
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struct bio *bio;
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struct bio *bio;
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@ -3120,6 +3122,7 @@ static int submit_bh_wbc(int op, int op_flags, struct buffer_head *bh,
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bio->bi_iter.bi_sector = bh->b_blocknr * (bh->b_size >> 9);
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bio->bi_iter.bi_sector = bh->b_blocknr * (bh->b_size >> 9);
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bio->bi_bdev = bh->b_bdev;
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bio->bi_bdev = bh->b_bdev;
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bio->bi_write_hint = write_hint;
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bio_add_page(bio, bh->b_page, bh->b_size, bh_offset(bh));
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bio_add_page(bio, bh->b_page, bh->b_size, bh_offset(bh));
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BUG_ON(bio->bi_iter.bi_size != bh->b_size);
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BUG_ON(bio->bi_iter.bi_size != bh->b_size);
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@ -3142,7 +3145,7 @@ static int submit_bh_wbc(int op, int op_flags, struct buffer_head *bh,
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int submit_bh(int op, int op_flags, struct buffer_head *bh)
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int submit_bh(int op, int op_flags, struct buffer_head *bh)
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{
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{
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return submit_bh_wbc(op, op_flags, bh, NULL);
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return submit_bh_wbc(op, op_flags, bh, 0, NULL);
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}
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}
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EXPORT_SYMBOL(submit_bh);
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EXPORT_SYMBOL(submit_bh);
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@ -615,6 +615,7 @@ alloc_new:
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goto confused;
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goto confused;
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wbc_init_bio(wbc, bio);
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wbc_init_bio(wbc, bio);
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bio->bi_write_hint = inode->i_write_hint;
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}
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}
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/*
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/*
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