projects / mirror_zfs-debian.git / blame
| Commit | Line | Data |
|---|---|---|
| 22929307 AX |
1 | dnl # |
| 2 | dnl # 2.6.32 - 2.6.33, bdi_setup_and_register() is not exported. | |
| 3 | dnl # 2.6.34 - 3.19, bdi_setup_and_register() takes 3 arguments. | |
| 4 | dnl # 4.0 - 4.11, bdi_setup_and_register() takes 2 arguments. | |
| 5 | dnl # 4.12 - x.y, super_setup_bdi_name() new interface. | |
| 6 | dnl # | |
| 7 | AC_DEFUN([ZFS_AC_KERNEL_BDI], [ | |
| 8 | AC_MSG_CHECKING([whether super_setup_bdi_name() exists]) | |
| 9 | ZFS_LINUX_TRY_COMPILE_SYMBOL([ | |
| 10 | #include <linux/fs.h> | |
| 11 | struct super_block sb; | |
| 12 | ], [ | |
| 13 | char *name = "bdi"; | |
| cae5b340 | 14 | atomic_long_t zfs_bdi_seq; |
| 22929307 | 15 | int error __attribute__((unused)) = |
| cae5b340 | 16 | super_setup_bdi_name(&sb, "%.28s-%ld", name, atomic_long_inc_return(&zfs_bdi_seq)); |
| 22929307 AX |
17 | ], [super_setup_bdi_name], [fs/super.c], [ |
| 18 | AC_MSG_RESULT(yes) | |
| 19 | AC_DEFINE(HAVE_SUPER_SETUP_BDI_NAME, 1, | |
| 20 | [super_setup_bdi_name() exits]) | |
| 21 | ], [ | |
| 22 | AC_MSG_RESULT(no) | |
| 23 | AC_MSG_CHECKING( | |
| 24 | [whether bdi_setup_and_register() wants 2 args]) | |
| 25 | ZFS_LINUX_TRY_COMPILE_SYMBOL([ | |
| 26 | #include <linux/backing-dev.h> | |
| 27 | struct backing_dev_info bdi; | |
| 28 | ], [ | |
| 29 | char *name = "bdi"; | |
| 30 | int error __attribute__((unused)) = | |
| 31 | bdi_setup_and_register(&bdi, name); | |
| 32 | ], [bdi_setup_and_register], [mm/backing-dev.c], [ | |
| 33 | AC_MSG_RESULT(yes) | |
| 34 | AC_DEFINE(HAVE_2ARGS_BDI_SETUP_AND_REGISTER, 1, | |
| 35 | [bdi_setup_and_register() wants 2 args]) | |
| 36 | ], [ | |
| 37 | AC_MSG_RESULT(no) | |
| 38 | AC_MSG_CHECKING( | |
| 39 | [whether bdi_setup_and_register() wants 3 args]) | |
| 40 | ZFS_LINUX_TRY_COMPILE_SYMBOL([ | |
| 41 | #include <linux/backing-dev.h> | |
| 42 | struct backing_dev_info bdi; | |
| 43 | ], [ | |
| 44 | char *name = "bdi"; | |
| 45 | unsigned int cap = BDI_CAP_MAP_COPY; | |
| 46 | int error __attribute__((unused)) = | |
| 47 | bdi_setup_and_register(&bdi, name, cap); | |
| 48 | ], [bdi_setup_and_register], [mm/backing-dev.c], [ | |
| 49 | AC_MSG_RESULT(yes) | |
| 50 | AC_DEFINE(HAVE_3ARGS_BDI_SETUP_AND_REGISTER, 1, | |
| 51 | [bdi_setup_and_register() wants 3 args]) | |
| 52 | ], [ | |
| 53 | AC_MSG_RESULT(no) | |
| 54 | ]) | |
| 55 | ]) | |
| 56 | ]) | |
| 57 | ]) |