diff options
Diffstat (limited to 'recipes-kernel/cryptodev/sdk_patches/0090-Adjust-to-recent-user-page-API-changes.patch')
-rw-r--r-- | recipes-kernel/cryptodev/sdk_patches/0090-Adjust-to-recent-user-page-API-changes.patch | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/recipes-kernel/cryptodev/sdk_patches/0090-Adjust-to-recent-user-page-API-changes.patch b/recipes-kernel/cryptodev/sdk_patches/0090-Adjust-to-recent-user-page-API-changes.patch new file mode 100644 index 00000000..95959299 --- /dev/null +++ b/recipes-kernel/cryptodev/sdk_patches/0090-Adjust-to-recent-user-page-API-changes.patch @@ -0,0 +1,55 @@ +From d40bcfdfb2c2c5aa4c47b5653fdea3ee317d234b Mon Sep 17 00:00:00 2001 +From: Michael Weiser <michael.weiser@gmx.de> +Date: Fri, 5 Aug 2016 18:43:55 +0200 +Subject: [PATCH 090/104] Adjust to recent user page API changes + +4.6.0 basically renamed get_user_pages() to get_user_pages_remote() and +introduced a new get_user_pages() that always works on the current +task.[1] Distinguish the two APIs based on kernel version we're +compiling for. + +Also, there seems to have been a massive cleansing of +page_cache_release(page) in favour of put_page(page)[2] which was an +alias for put_page(page)[3] since 2.6.0. Before that beginning with +2.4.0 both page_cache_release(page) and put_page(page) have been aliases +for __free_page(page). So using put_page() instead of +page_cache_release(page) will produce identical code for anything after +2.4.0. + +[1] https://lkml.org/lkml/2016/2/10/555 +[2] https://www.spinics.net/lists/linux-fsdevel/msg95923.html +[3] https://www.spinics.net/lists/linux-fsdevel/msg95922.html +--- + zc.c | 9 +++++++-- + 1 file changed, 7 insertions(+), 2 deletions(-) + +diff --git a/zc.c b/zc.c +index 29b0501..a97b49f 100644 +--- a/zc.c ++++ b/zc.c +@@ -59,7 +59,12 @@ int __get_userbuf(uint8_t __user *addr, uint32_t len, int write, + } + + down_read(&mm->mmap_sem); +- ret = get_user_pages(task, mm, ++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 6, 0)) ++ ret = get_user_pages_remote( ++#else ++ ret = get_user_pages( ++#endif ++ task, mm, + (unsigned long)addr, pgcount, write, 0, pg, NULL); + up_read(&mm->mmap_sem); + if (ret != pgcount) +@@ -119,7 +124,7 @@ void release_user_pages(struct csession *ses) + else + ses->readonly_pages--; + +- page_cache_release(ses->pages[i]); ++ put_page(ses->pages[i]); + } + ses->used_pages = 0; + } +-- +2.10.2 + |