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7bdf406d TG |
1 | dnl # |
2 | dnl # 2.6.30 API change | |
3 | dnl # bdev_hardsect_size() replaced with bdev_logical_block_size(). While | |
4 | dnl # it has been true for a while that there was no strict 1:1 mapping | |
5 | dnl # between physical sector size and logical block size this change makes | |
6 | dnl # it explicit. | |
7 | dnl # | |
8 | AC_DEFUN([ZFS_AC_KERNEL_BDEV_LOGICAL_BLOCK_SIZE], [ | |
9 | AC_MSG_CHECKING([whether bdev_logical_block_size() is available]) | |
10 | tmp_flags="$EXTRA_KCFLAGS" | |
11 | EXTRA_KCFLAGS="${NO_UNUSED_BUT_SET_VARIABLE}" | |
12 | ZFS_LINUX_TRY_COMPILE([ | |
13 | #include <linux/blkdev.h> | |
14 | ],[ | |
15 | struct block_device *bdev = NULL; | |
16 | bdev_logical_block_size(bdev); | |
17 | ],[ | |
18 | AC_MSG_RESULT(yes) | |
19 | AC_DEFINE(HAVE_BDEV_LOGICAL_BLOCK_SIZE, 1, | |
20 | [bdev_logical_block_size() is available]) | |
21 | ],[ | |
22 | AC_MSG_RESULT(no) | |
23 | ]) | |
24 | EXTRA_KCFLAGS="$tmp_flags" | |
25 | ]) |