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Linux 3.14 compat: IO acct, global_page_state, etc

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generic_start_io_acct/generic_end_io_acct in the master
branch of the linux kernel requires that the request_queue
be provided.

Move the logic from freemem in the spl to arc_free_memory
in arc.c. Do this so we can take advantage of global_page_state
interface checks in zfs.

Upstream kernel replaced struct block_device with
struct gendisk in struct bio. Determine if the
function bio_set_dev exists during configure
and have zfs use that if it exists.

bio_set_dev https://github.com/torvalds/linux/commit/74d4699
global_node_page_state https://github.com/torvalds/linux/commit/75ef718
io acct https://github.com/torvalds/linux/commit/d62e26b

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Closes #6635
This commit is contained in:
Giuseppe Di Natale
2017-09-16 11:00:19 -07:00
committed by Brian Behlendorf
parent 90cdf2833d
commit 787acae0b5
7 changed files with 112 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files
module/zfs/zvol.c
+12 -6
View File
@@ -761,7 +761,8 @@ zvol_write(void *arg)
ASSERT(zv && zv->zv_open_count > 0);
start_jif = jiffies;
generic_start_io_acct(WRITE, bio_sectors(bio), &zv->zv_disk->part0);
blk_generic_start_io_acct(zv->zv_queue, WRITE, bio_sectors(bio),
&zv->zv_disk->part0);
sync = bio_is_fua(bio) || zv->zv_objset->os_sync == ZFS_SYNC_ALWAYS;
@@ -794,7 +795,8 @@ zvol_write(void *arg)
zil_commit(zv->zv_zilog, ZVOL_OBJ);
rw_exit(&zv->zv_suspend_lock);
generic_end_io_acct(WRITE, &zv->zv_disk->part0, start_jif);
blk_generic_end_io_acct(zv->zv_queue, WRITE, &zv->zv_disk->part0,
start_jif);
BIO_END_IO(bio, -error);
kmem_free(zvr, sizeof (zv_request_t));
}
@@ -840,7 +842,8 @@ zvol_discard(void *arg)
ASSERT(zv && zv->zv_open_count > 0);
start_jif = jiffies;
generic_start_io_acct(WRITE, bio_sectors(bio), &zv->zv_disk->part0);
blk_generic_start_io_acct(zv->zv_queue, WRITE, bio_sectors(bio),
&zv->zv_disk->part0);
sync = bio_is_fua(bio) || zv->zv_objset->os_sync == ZFS_SYNC_ALWAYS;
@@ -881,7 +884,8 @@ unlock:
zil_commit(zv->zv_zilog, ZVOL_OBJ);
rw_exit(&zv->zv_suspend_lock);
generic_end_io_acct(WRITE, &zv->zv_disk->part0, start_jif);
blk_generic_end_io_acct(zv->zv_queue, WRITE, &zv->zv_disk->part0,
start_jif);
BIO_END_IO(bio, -error);
kmem_free(zvr, sizeof (zv_request_t));
}
@@ -902,7 +906,8 @@ zvol_read(void *arg)
ASSERT(zv && zv->zv_open_count > 0);
start_jif = jiffies;
generic_start_io_acct(READ, bio_sectors(bio), &zv->zv_disk->part0);
blk_generic_start_io_acct(zv->zv_queue, READ, bio_sectors(bio),
&zv->zv_disk->part0);
while (uio.uio_resid > 0 && uio.uio_loffset < volsize) {
uint64_t bytes = MIN(uio.uio_resid, DMU_MAX_ACCESS >> 1);
@@ -922,7 +927,8 @@ zvol_read(void *arg)
zfs_range_unlock(zvr->rl);
rw_exit(&zv->zv_suspend_lock);
generic_end_io_acct(READ, &zv->zv_disk->part0, start_jif);
blk_generic_end_io_acct(zv->zv_queue, READ, &zv->zv_disk->part0,
start_jif);
BIO_END_IO(bio, -error);
kmem_free(zvr, sizeof (zv_request_t));
}