ext4: replace ext4_io_submit->io_op with ->io_wbc
ext4_io_submit_init() takes the pointer to writeback_control to test
its sync_mode and determine between WRITE and WRITE_SYNC and records
the result in ->io_op. This patch makes it record the pointer
directly and moves the test to ext4_io_submit().
This doesn't cause any noticeable differences now but having
writeback_control available throughout IO submission path will be
depended upon by the planned cgroup writeback support.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
index 5602450..a917bfe 100644
--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -357,8 +357,10 @@
struct bio *bio = io->io_bio;
if (bio) {
+ int io_op = io->io_wbc->sync_mode == WB_SYNC_ALL ?
+ WRITE_SYNC : WRITE;
bio_get(io->io_bio);
- submit_bio(io->io_op, io->io_bio);
+ submit_bio(io_op, io->io_bio);
bio_put(io->io_bio);
}
io->io_bio = NULL;
@@ -367,7 +369,7 @@
void ext4_io_submit_init(struct ext4_io_submit *io,
struct writeback_control *wbc)
{
- io->io_op = (wbc->sync_mode == WB_SYNC_ALL ? WRITE_SYNC : WRITE);
+ io->io_wbc = wbc;
io->io_bio = NULL;
io->io_end = NULL;
}
