p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

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>
This commit is contained in:
Jens Axboe 2017-06-27 09:30:05 -06:00
parent 45d06cf701
commit 8e8f929881
2 changed files with 9 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
fs/buffer.c
View File

@ -49,7 +49,7 @@
static int fsync_buffers_list(spinlock_t *lock, struct list_head *list);
static int submit_bh_wbc(int op, int op_flags, struct buffer_head *bh,
struct writeback_control *wbc);
enum rw_hint hint, struct writeback_control *wbc);
#define BH_ENTRY(list) list_entry((list), struct buffer_head, b_assoc_buffers)
@ -1829,7 +1829,8 @@ int __block_write_full_page(struct inode *inode, struct page *page,
do {
struct buffer_head *next = bh->b_this_page;
if (buffer_async_write(bh)) {
submit_bh_wbc(REQ_OP_WRITE, write_flags, bh, wbc);
submit_bh_wbc(REQ_OP_WRITE, write_flags, bh,
inode->i_write_hint, wbc);
nr_underway++;
}
bh = next;
@ -1883,7 +1884,8 @@ int __block_write_full_page(struct inode *inode, struct page *page,
struct buffer_head *next = bh->b_this_page;
if (buffer_async_write(bh)) {
clear_buffer_dirty(bh);
submit_bh_wbc(REQ_OP_WRITE, write_flags, bh, wbc);
submit_bh_wbc(REQ_OP_WRITE, write_flags, bh,
inode->i_write_hint, wbc);
nr_underway++;
}
bh = next;
@ -3091,7 +3093,7 @@ void guard_bio_eod(int op, struct bio *bio)
}
static int submit_bh_wbc(int op, int op_flags, struct buffer_head *bh,
struct writeback_control *wbc)
enum rw_hint write_hint, struct writeback_control *wbc)
{
struct bio *bio;
@ -3120,6 +3122,7 @@ static int submit_bh_wbc(int op, int op_flags, struct buffer_head *bh,
bio->bi_iter.bi_sector = bh->b_blocknr * (bh->b_size >> 9);
bio->bi_bdev = bh->b_bdev;
bio->bi_write_hint = write_hint;
bio_add_page(bio, bh->b_page, bh->b_size, bh_offset(bh));
BUG_ON(bio->bi_iter.bi_size != bh->b_size);
@ -3142,7 +3145,7 @@ static int submit_bh_wbc(int op, int op_flags, struct buffer_head *bh,
int submit_bh(int op, int op_flags, struct buffer_head *bh)
{
return submit_bh_wbc(op, op_flags, bh, NULL);
return submit_bh_wbc(op, op_flags, bh, 0, NULL);
}
EXPORT_SYMBOL(submit_bh);

1
fs/mpage.c
View File

@ -615,6 +615,7 @@ static int __mpage_writepage(struct page *page, struct writeback_control *wbc,
goto confused;
wbc_init_bio(wbc, bio);
bio->bi_write_hint = inode->i_write_hint;
}
/*