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config: remove HAVE_GET_USER_PAGES_*

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get_user_pages_unlocked() had stabilised by 4.9.

Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Closes #16479
This commit is contained in:
Rob Norris
2024-09-18 22:20:47 +10:00
committed by Brian Behlendorf
parent 696d7a71a0
commit 5df65ca9c1
4 changed files with 10 additions and 229 deletions
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include/os/linux/kernel/linux/kmap_compat.h
-45
View File
@@ -48,49 +48,4 @@
#define zfs_access_ok(type, addr, size) access_ok(addr, size)
#endif
/*
* read returning FOLL_WRITE is due to the fact that we are stating
* that the kernel will have write access to the user pages. So, when
* a Direct I/O read request is issued, the kernel must write to the user
* pages.
*
* get_user_pages_unlocked was not available to 4.0, so we also check
* for get_user_pages on older kernels.
*/
/* 4.9 API change - for and read flag is passed as gup flags */
#if defined(HAVE_GET_USER_PAGES_UNLOCKED_GUP_FLAGS)
#define zfs_get_user_pages(addr, numpages, read, pages) \
get_user_pages_unlocked(addr, numpages, pages, read ? FOLL_WRITE : 0)
/* 4.8 API change - no longer takes struct task_struct as arguement */
#elif defined(HAVE_GET_USER_PAGES_UNLOCKED_WRITE_FLAG)
#define zfs_get_user_pages(addr, numpages, read, pages) \
get_user_pages_unlocked(addr, numpages, read, 0, pages)
/* 4.0-4.3, 4.5-4.7 API */
#elif defined(HAVE_GET_USER_PAGES_UNLOCKED_TASK_STRUCT)
#define zfs_get_user_pages(addr, numpages, read, pages) \
get_user_pages_unlocked(current, current->mm, addr, numpages, read, 0, \
pages)
/* 4.4 API */
#elif defined(HAVE_GET_USER_PAGES_UNLOCKED_TASK_STRUCT_GUP_FLAGS)
#define zfs_get_user_pages(addr, numpages, read, pages) \
get_user_pages_unlocked(current, current->mm, addr, numpages, pages, \
read ? FOLL_WRITE : 0)
/* Using get_user_pages if kernel is < 4.0 */
#elif defined(HAVE_GET_USER_PAGES_TASK_STRUCT)
#define zfs_get_user_pages(addr, numpages, read, pages) \
get_user_pages(current, current->mm, addr, numpages, read, 0, pages, \
NULL)
#else
/*
* This case is unreachable. We must be able to use either
* get_user_pages_unlocked() or get_user_pages() to map user pages into
* the kernel.
*/
#error "Unknown Direct I/O interface"
#endif
#endif /* _ZFS_KMAP_H */