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ext4: add support for passing in write hints for buffered writes

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Reviewed-by: Andreas Dilger <[email protected]>
Reviewed-by: Martin K. Petersen <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Jens Axboe 2017-06-27 09:32:37 -06:00
commit 0127251c45
1 changed files with 2 additions and 0 deletions
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2
fs/ext4/page-io.c
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@ -350,6 +350,7 @@ void ext4_io_submit(struct ext4_io_submit *io)
if (bio) {
int io_op_flags = io->io_wbc->sync_mode == WB_SYNC_ALL ?
REQ_SYNC : 0;
io->io_bio->bi_write_hint = io->io_end->inode->i_write_hint;
bio_set_op_attrs(io->io_bio, REQ_OP_WRITE, io_op_flags);
submit_bio(io->io_bio);
}
@ -397,6 +398,7 @@ submit_and_retry:
ret = io_submit_init_bio(io, bh);
if (ret)
return ret;
io->io_bio->bi_write_hint = inode->i_write_hint;
}
ret = bio_add_page(io->io_bio, page, bh->b_size, bh_offset(bh));
if (ret != bh->b_size)