a1d9543a39
Linux kernel commit torvalds/linux@db2a144 changed the return type of block_device_operations->release() to void. Detect the expected prototype and defined our callout accordingly. Signed-off-by: Chris Dunlop <chris@onthe.net.au> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #1494
35 lines
989 B
Plaintext
35 lines
989 B
Plaintext
dnl #
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dnl # 2.6.x API change
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_BDEV_BLOCK_DEVICE_OPERATIONS], [
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AC_MSG_CHECKING([block device operation prototypes])
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tmp_flags="$EXTRA_KCFLAGS"
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EXTRA_KCFLAGS="${NO_UNUSED_BUT_SET_VARIABLE}"
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/blkdev.h>
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int blk_open(struct block_device *bdev, fmode_t mode)
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{ return 0; }
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int blk_ioctl(struct block_device *bdev, fmode_t mode,
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unsigned x, unsigned long y) { return 0; }
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int blk_compat_ioctl(struct block_device * bdev, fmode_t mode,
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unsigned x, unsigned long y) { return 0; }
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static const struct block_device_operations
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bops __attribute__ ((unused)) = {
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.open = blk_open,
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.release = NULL,
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.ioctl = blk_ioctl,
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.compat_ioctl = blk_compat_ioctl,
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};
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],[
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],[
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AC_MSG_RESULT(struct block_device)
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AC_DEFINE(HAVE_BDEV_BLOCK_DEVICE_OPERATIONS, 1,
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[struct block_device_operations use bdevs])
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],[
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AC_MSG_RESULT(struct inode)
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])
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EXTRA_KCFLAGS="$tmp_flags"
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])
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