projects / mirror_zfs.git / blame
| Commit | Line | Data |
|---|---|---|
| 739a1a82 RY |
1 | dnl # |
| 2 | dnl # 3.5.0 API change | |
| 3 | dnl # torvalds/linux@dbd5768f87ff6fb0a4fe09c4d7b6c4a24de99430 and | |
| 4 | dnl # torvalds/linux@7994e6f7254354e03028a11f98a27bd67dace9f1 reworked | |
| 5 | dnl # where inode_sync_wait() is called. | |
| 6 | dnl # | |
| 7 | dnl # Prior to these changes it would occur in end_writeback() but due | |
| 8 | dnl # to various issues (described in the above commits) it has been | |
| 9 | dnl # moved to evict(). This changes the ordering is which sync occurs | |
| 10 | dnl # but otherwise doesn't impact the zpl implementation. | |
| 11 | dnl # | |
| 12 | dnl # The major impact here is the renaming of end_writeback() to | |
| 13 | dnl # clear_inode(). However, care must be taken when detecting this | |
| 14 | dnl # API change because as recently as 2.6.35 there was a clear_inode() | |
| 15 | dnl # function. However, it was made obsolete by the evict_inode() API | |
| 16 | dnl # change at the same time. | |
| 17 | dnl # | |
| 18 | dnl # Therefore, to ensure we have the correct API we only allow the | |
| 19 | dnl # clear_inode() compatibility code to be defined iff the evict_inode() | |
| 20 | dnl # functionality is also detected. | |
| 21 | dnl # | |
| 70574182 ED |
22 | AC_DEFUN([ZFS_AC_KERNEL_CLEAR_INODE], |
| 23 | [AC_MSG_CHECKING([whether clear_inode() is available]) | |
| 24 | ZFS_LINUX_TRY_COMPILE_SYMBOL([ | |
| 25 | #include <linux/fs.h> | |
| 26 | ], [ | |
| 27 | clear_inode(NULL); | |
| 28 | ], [clear_inode], [fs/inode.c], [ | |
| 29 | AC_MSG_RESULT(yes) | |
| 30 | AC_DEFINE(HAVE_CLEAR_INODE, 1, [clear_inode() is available]) | |
| 31 | ], [ | |
| 32 | AC_MSG_RESULT(no) | |
| 33 | ]) | |
| 739a1a82 | 34 | ]) |