projects / mirror_zfs.git / blame
| Commit | Line | Data |
|---|---|---|
| 7dae2c81 | 1 | dnl # |
| 608f8749 | 2 | dnl # Check available BDI interfaces. |
| 7dae2c81 | 3 | dnl # |
| 608f8749 BB |
4 | AC_DEFUN([ZFS_AC_KERNEL_SRC_BDI], [ |
| 5 | ZFS_LINUX_TEST_SRC([super_setup_bdi_name], [ | |
| 7dae2c81 BB |
6 | #include <linux/fs.h> |
| 7 | struct super_block sb; | |
| 8 | ], [ | |
| 9 | char *name = "bdi"; | |
| f269060a | 10 | atomic_long_t zfs_bdi_seq; |
| d66b817f RE |
11 | int error __attribute__((unused)); |
| 12 | atomic_long_set(&zfs_bdi_seq, 0); | |
| 13 | error = | |
| 608f8749 BB |
14 | super_setup_bdi_name(&sb, "%.28s-%ld", name, |
| 15 | atomic_long_inc_return(&zfs_bdi_seq)); | |
| 16 | ]) | |
| 17 | ||
| 18 | ZFS_LINUX_TEST_SRC([bdi_setup_and_register], [ | |
| 19 | #include <linux/backing-dev.h> | |
| 20 | struct backing_dev_info bdi; | |
| 21 | ], [ | |
| 22 | char *name = "bdi"; | |
| 23 | int error __attribute__((unused)) = | |
| 24 | bdi_setup_and_register(&bdi, name); | |
| 25 | ]) | |
| 26 | ||
| 27 | ZFS_LINUX_TEST_SRC([bdi_setup_and_register_3args], [ | |
| 28 | #include <linux/backing-dev.h> | |
| 29 | struct backing_dev_info bdi; | |
| 30 | ], [ | |
| 31 | char *name = "bdi"; | |
| 32 | unsigned int cap = BDI_CAP_MAP_COPY; | |
| 33 | int error __attribute__((unused)) = | |
| 34 | bdi_setup_and_register(&bdi, name, cap); | |
| 35 | ]) | |
| 36 | ]) | |
| 37 | ||
| 38 | AC_DEFUN([ZFS_AC_KERNEL_BDI], [ | |
| 39 | dnl # | |
| 40 | dnl # 4.12, super_setup_bdi_name() introduced. | |
| 41 | dnl # | |
| 42 | AC_MSG_CHECKING([whether super_setup_bdi_name() exists]) | |
| 43 | ZFS_LINUX_TEST_RESULT_SYMBOL([super_setup_bdi_name], | |
| 44 | [super_setup_bdi_name], [fs/super.c], [ | |
| 7dae2c81 BB |
45 | AC_MSG_RESULT(yes) |
| 46 | AC_DEFINE(HAVE_SUPER_SETUP_BDI_NAME, 1, | |
| 47 | [super_setup_bdi_name() exits]) | |
| 48 | ], [ | |
| 49 | AC_MSG_RESULT(no) | |
| 608f8749 BB |
50 | |
| 51 | dnl # | |
| 52 | dnl # 4.0 - 4.11, bdi_setup_and_register() takes 2 arguments. | |
| 53 | dnl # | |
| 7dae2c81 BB |
54 | AC_MSG_CHECKING( |
| 55 | [whether bdi_setup_and_register() wants 2 args]) | |
| 608f8749 BB |
56 | ZFS_LINUX_TEST_RESULT_SYMBOL([bdi_setup_and_register], |
| 57 | [bdi_setup_and_register], [mm/backing-dev.c], [ | |
| 7dae2c81 BB |
58 | AC_MSG_RESULT(yes) |
| 59 | AC_DEFINE(HAVE_2ARGS_BDI_SETUP_AND_REGISTER, 1, | |
| 60 | [bdi_setup_and_register() wants 2 args]) | |
| 61 | ], [ | |
| 62 | AC_MSG_RESULT(no) | |
| 608f8749 BB |
63 | |
| 64 | dnl # | |
| 65 | dnl # 2.6.34 - 3.19, bdi_setup_and_register() | |
| 66 | dnl # takes 3 arguments. | |
| 67 | dnl # | |
| 7dae2c81 BB |
68 | AC_MSG_CHECKING( |
| 69 | [whether bdi_setup_and_register() wants 3 args]) | |
| 608f8749 BB |
70 | ZFS_LINUX_TEST_RESULT_SYMBOL( |
| 71 | [bdi_setup_and_register_3args], | |
| 72 | [bdi_setup_and_register], [mm/backing-dev.c], [ | |
| 7dae2c81 BB |
73 | AC_MSG_RESULT(yes) |
| 74 | AC_DEFINE(HAVE_3ARGS_BDI_SETUP_AND_REGISTER, 1, | |
| 75 | [bdi_setup_and_register() wants 3 args]) | |
| 76 | ], [ | |
| 066e8252 | 77 | ZFS_LINUX_TEST_ERROR([bdi_setup]) |
| 7dae2c81 BB |
78 | ]) |
| 79 | ]) | |
| 80 | ]) | |
| 81 | ]) |