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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
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config/kernel.m4
+3 -1
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@@ -24,6 +24,7 @@ AC_DEFUN([ZFS_AC_CONFIG_KERNEL], [
ZFS_AC_KERNEL_BDEV_PHYSICAL_BLOCK_SIZE
ZFS_AC_KERNEL_BIO_BVEC_ITER
ZFS_AC_KERNEL_BIO_FAILFAST_DTD
ZFS_AC_KERNEL_BIO_SET_DEV
ZFS_AC_KERNEL_REQ_FAILFAST_MASK
ZFS_AC_KERNEL_REQ_OP_DISCARD
ZFS_AC_KERNEL_REQ_OP_SECURE_ERASE
@@ -113,7 +114,8 @@ AC_DEFUN([ZFS_AC_CONFIG_KERNEL], [
ZFS_AC_KERNEL_KMAP_ATOMIC_ARGS
ZFS_AC_KERNEL_FOLLOW_DOWN_ONE
ZFS_AC_KERNEL_MAKE_REQUEST_FN
ZFS_AC_KERNEL_GENERIC_IO_ACCT
ZFS_AC_KERNEL_GENERIC_IO_ACCT_3ARG
ZFS_AC_KERNEL_GENERIC_IO_ACCT_4ARG
ZFS_AC_KERNEL_FPU
ZFS_AC_KERNEL_KUID_HELPERS
ZFS_AC_KERNEL_MODULE_PARAM_CALL_CONST