ab4fb9b74e
Last use of wait_lock was removed in "Linux 5.3 compat: retire
rw_tryupgrade()" (e7a99dab2b).
Fixes the issue reported in
https://github.com/openzfs/zfs/issues/11097#issuecomment-714532367
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Orivej Desh <orivej@gmx.fr>
Closes #11309
61 lines
1.5 KiB
Plaintext
61 lines
1.5 KiB
Plaintext
dnl #
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dnl # 3.16 API Change
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dnl #
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dnl # rwsem-spinlock "->activity" changed to "->count"
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_RWSEM_ACTIVITY], [
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ZFS_LINUX_TEST_SRC([rwsem_activity], [
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#include <linux/rwsem.h>
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],[
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struct rw_semaphore dummy_semaphore __attribute__ ((unused));
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dummy_semaphore.activity = 0;
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_RWSEM_ACTIVITY], [
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AC_MSG_CHECKING([whether struct rw_semaphore has member activity])
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ZFS_LINUX_TEST_RESULT([rwsem_activity], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_RWSEM_ACTIVITY, 1,
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[struct rw_semaphore has member activity])
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],[
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # 4.8 API Change
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dnl #
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dnl # rwsem "->count" changed to atomic_long_t type
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_RWSEM_ATOMIC_LONG_COUNT], [
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ZFS_LINUX_TEST_SRC([rwsem_atomic_long_count], [
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#include <linux/rwsem.h>
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],[
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DECLARE_RWSEM(dummy_semaphore);
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(void) atomic_long_read(&dummy_semaphore.count);
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_RWSEM_ATOMIC_LONG_COUNT], [
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AC_MSG_CHECKING(
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[whether struct rw_semaphore has atomic_long_t member count])
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ZFS_LINUX_TEST_RESULT([rwsem_atomic_long_count], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_RWSEM_ATOMIC_LONG_COUNT, 1,
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[struct rw_semaphore has atomic_long_t member count])
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],[
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AC_MSG_RESULT(no)
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_SRC_RWSEM], [
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ZFS_AC_KERNEL_SRC_RWSEM_ACTIVITY
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ZFS_AC_KERNEL_SRC_RWSEM_ATOMIC_LONG_COUNT
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])
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AC_DEFUN([ZFS_AC_KERNEL_RWSEM], [
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ZFS_AC_KERNEL_RWSEM_ACTIVITY
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ZFS_AC_KERNEL_RWSEM_ATOMIC_LONG_COUNT
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])
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