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Linux compat: Minimum kernel version 3.10

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Increase the minimum supported kernel version from 2.6.32 to 3.10.
This removes support for the following Linux enterprise distributions.

    Distribution     | Kernel | End of Life
    ---------------- | ------ | -------------
    Ubuntu 12.04 LTS | 3.2    | Apr 28, 2017
    SLES 11          | 3.0    | Mar 32, 2019
    RHEL / CentOS 6  | 2.6.32 | Nov 30, 2020

The following changes were made as part of removing support.

* Updated `configure` to enforce a minimum kernel version as
  specified in the META file (Linux-Minimum: 3.10).

    configure: error:
        *** Cannot build against kernel version 2.6.32.
        *** The minimum supported kernel version is 3.10.

* Removed all `configure` kABI checks and matching C code for
  interfaces which solely predate the Linux 3.10 kernel.

* Updated all `configure` kABI checks to fail when an interface is
  missing which was in the 3.10 kernel up to the latest 5.1 kernel.
  Removed the HAVE_* preprocessor defines for these checks and
  updated the code to unconditionally use the verified interface.

* Inverted the detection logic in several kABI checks to match
  the new interface as it appears in 3.10 and newer and not the
  legacy interface.

* Consolidated the following checks in to individual files. Due
  the large number of changes in the checks it made sense to handle
  this now.  It would be desirable to group other related checks in
  the same fashion, but this as left as future work.

  - config/kernel-blkdev.m4 - Block device kABI checks
  - config/kernel-blk-queue.m4 - Block queue kABI checks
  - config/kernel-bio.m4 - Bio interface kABI checks

* Removed the kABI checks for sops->nr_cached_objects() and
  sops->free_cached_objects().  These interfaces are currently unused.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #9566
This commit is contained in:
Brian Behlendorf
2019-11-12 08:59:06 -08:00
committed by GitHub
parent 035ebb3653
commit 066e825221
102 changed files with 1136 additions and 2965 deletions
Download Patch File Download Diff File Expand all files Collapse all files
config/kernel.m4
+17 -58
View File
@@ -37,7 +37,6 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_SRC], [
ZFS_AC_KERNEL_SRC_OBJTOOL
ZFS_AC_KERNEL_SRC_GLOBAL_PAGE_STATE
ZFS_AC_KERNEL_SRC_ACCESS_OK_TYPE
ZFS_AC_KERNEL_SRC_CTL_NAME
ZFS_AC_KERNEL_SRC_PDE_DATA
ZFS_AC_KERNEL_SRC_FALLOCATE
ZFS_AC_KERNEL_SRC_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE
@@ -51,33 +50,11 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_SRC], [
ZFS_AC_KERNEL_SRC_GROUP_INFO_GID
ZFS_AC_KERNEL_SRC_RW
ZFS_AC_KERNEL_SRC_TIMER_SETUP
ZFS_AC_KERNEL_SRC_CURRENT_BIO_TAIL
ZFS_AC_KERNEL_SRC_SUPER_USER_NS
ZFS_AC_KERNEL_SRC_SUBMIT_BIO
ZFS_AC_KERNEL_SRC_BLOCK_DEVICE_OPERATIONS
ZFS_AC_KERNEL_SRC_BLKDEV_GET_BY_PATH
ZFS_AC_KERNEL_SRC_BLKDEV_REREAD_PART
ZFS_AC_KERNEL_SRC_INVALIDATE_BDEV
ZFS_AC_KERNEL_SRC_LOOKUP_BDEV
ZFS_AC_KERNEL_SRC_BDEV_OPEN_EXCLUSIVE
ZFS_AC_KERNEL_SRC_BDEV_LOGICAL_BLOCK_SIZE
ZFS_AC_KERNEL_SRC_BDEV_PHYSICAL_BLOCK_SIZE
ZFS_AC_KERNEL_SRC_BIO_BVEC_ITER
ZFS_AC_KERNEL_SRC_BIO_FAILFAST
ZFS_AC_KERNEL_SRC_BIO_SET_DEV
ZFS_AC_KERNEL_SRC_BIO_OPS
ZFS_AC_KERNEL_SRC_BIO_END_IO_T_ARGS
ZFS_AC_KERNEL_SRC_BIO_BI_STATUS
ZFS_AC_KERNEL_SRC_BIO_RW_BARRIER
ZFS_AC_KERNEL_SRC_BIO_RW_DISCARD
ZFS_AC_KERNEL_SRC_BLK_QUEUE_BDI
ZFS_AC_KERNEL_SRC_BLK_QUEUE_DISCARD
ZFS_AC_KERNEL_SRC_BLK_QUEUE_SECURE_ERASE
ZFS_AC_KERNEL_SRC_BLK_QUEUE_FLAGS
ZFS_AC_KERNEL_SRC_BLK_QUEUE_FLUSH
ZFS_AC_KERNEL_SRC_BLK_QUEUE_MAX_HW_SECTORS
ZFS_AC_KERNEL_SRC_BLK_QUEUE_MAX_SEGMENTS
ZFS_AC_KERNEL_SRC_BLK_QUEUE_PLUG
ZFS_AC_KERNEL_SRC_BIO
ZFS_AC_KERNEL_SRC_BLKDEV
ZFS_AC_KERNEL_SRC_BLK_QUEUE
ZFS_AC_KERNEL_SRC_GET_DISK_AND_MODULE
ZFS_AC_KERNEL_SRC_GET_DISK_RO
ZFS_AC_KERNEL_SRC_GENERIC_READLINK_GLOBAL
@@ -97,12 +74,11 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_SRC], [
ZFS_AC_KERNEL_SRC_DIRTY_INODE
ZFS_AC_KERNEL_SRC_SHRINKER
ZFS_AC_KERNEL_SRC_MKDIR_UMODE_T
ZFS_AC_KERNEL_SRC_LOOKUP_NAMEIDATA
ZFS_AC_KERNEL_SRC_CREATE_NAMEIDATA
ZFS_AC_KERNEL_SRC_LOOKUP_FLAGS
ZFS_AC_KERNEL_SRC_CREATE_FLAGS
ZFS_AC_KERNEL_SRC_GET_LINK
ZFS_AC_KERNEL_SRC_PUT_LINK
ZFS_AC_KERNEL_SRC_TMPFILE
ZFS_AC_KERNEL_SRC_TRUNCATE_RANGE
ZFS_AC_KERNEL_SRC_AUTOMOUNT
ZFS_AC_KERNEL_SRC_ENCODE_FH_WITH_INODE
ZFS_AC_KERNEL_SRC_COMMIT_METADATA
@@ -154,7 +130,6 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_RESULT], [
ZFS_AC_KERNEL_ACCESS_OK_TYPE
ZFS_AC_KERNEL_GLOBAL_PAGE_STATE
ZFS_AC_KERNEL_OBJTOOL
ZFS_AC_KERNEL_CTL_NAME
ZFS_AC_KERNEL_PDE_DATA
ZFS_AC_KERNEL_FALLOCATE
ZFS_AC_KERNEL_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE
@@ -168,33 +143,11 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_RESULT], [
ZFS_AC_KERNEL_GROUP_INFO_GID
ZFS_AC_KERNEL_RW
ZFS_AC_KERNEL_TIMER_SETUP
ZFS_AC_KERNEL_CURRENT_BIO_TAIL
ZFS_AC_KERNEL_SUPER_USER_NS
ZFS_AC_KERNEL_SUBMIT_BIO
ZFS_AC_KERNEL_BLOCK_DEVICE_OPERATIONS
ZFS_AC_KERNEL_BLKDEV_GET_BY_PATH
ZFS_AC_KERNEL_BLKDEV_REREAD_PART
ZFS_AC_KERNEL_INVALIDATE_BDEV
ZFS_AC_KERNEL_LOOKUP_BDEV
ZFS_AC_KERNEL_BDEV_OPEN_EXCLUSIVE
ZFS_AC_KERNEL_BDEV_LOGICAL_BLOCK_SIZE
ZFS_AC_KERNEL_BDEV_PHYSICAL_BLOCK_SIZE
ZFS_AC_KERNEL_BIO_BVEC_ITER
ZFS_AC_KERNEL_BIO_FAILFAST
ZFS_AC_KERNEL_BIO_SET_DEV
ZFS_AC_KERNEL_BIO_OPS
ZFS_AC_KERNEL_BIO_END_IO_T_ARGS
ZFS_AC_KERNEL_BIO_BI_STATUS
ZFS_AC_KERNEL_BIO_RW_BARRIER
ZFS_AC_KERNEL_BIO_RW_DISCARD
ZFS_AC_KERNEL_BLK_QUEUE_BDI
ZFS_AC_KERNEL_BLK_QUEUE_DISCARD
ZFS_AC_KERNEL_BLK_QUEUE_SECURE_ERASE
ZFS_AC_KERNEL_BLK_QUEUE_FLAGS
ZFS_AC_KERNEL_BLK_QUEUE_FLUSH
ZFS_AC_KERNEL_BLK_QUEUE_MAX_HW_SECTORS
ZFS_AC_KERNEL_BLK_QUEUE_MAX_SEGMENTS
ZFS_AC_KERNEL_BLK_QUEUE_PLUG
ZFS_AC_KERNEL_BIO
ZFS_AC_KERNEL_BLKDEV
ZFS_AC_KERNEL_BLK_QUEUE
ZFS_AC_KERNEL_GET_DISK_AND_MODULE
ZFS_AC_KERNEL_GET_DISK_RO
ZFS_AC_KERNEL_GENERIC_READLINK_GLOBAL
@@ -214,12 +167,11 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_RESULT], [
ZFS_AC_KERNEL_DIRTY_INODE
ZFS_AC_KERNEL_SHRINKER
ZFS_AC_KERNEL_MKDIR_UMODE_T
ZFS_AC_KERNEL_LOOKUP_NAMEIDATA
ZFS_AC_KERNEL_CREATE_NAMEIDATA
ZFS_AC_KERNEL_LOOKUP_FLAGS
ZFS_AC_KERNEL_CREATE_FLAGS
ZFS_AC_KERNEL_GET_LINK
ZFS_AC_KERNEL_PUT_LINK
ZFS_AC_KERNEL_TMPFILE
ZFS_AC_KERNEL_TRUNCATE_RANGE
ZFS_AC_KERNEL_AUTOMOUNT
ZFS_AC_KERNEL_ENCODE_FH_WITH_INODE
ZFS_AC_KERNEL_COMMIT_METADATA
@@ -391,6 +343,13 @@ AC_DEFUN([ZFS_AC_KERNEL], [
AC_MSG_RESULT([$kernsrcver])
AS_VERSION_COMPARE([$kernsrcver], [$ZFS_META_KVER_MIN], [
AC_MSG_ERROR([
*** Cannot build against kernel version $kernsrcver.
*** The minimum supported kernel version is $ZFS_META_KVER_MIN.
])
])
LINUX=${kernelsrc}
LINUX_OBJ=${kernelbuild}
LINUX_VERSION=${kernsrcver}