diff options
| author | Souptick Joarder <jrdr.linux@gmail.com> | 2020-12-29 15:14:34 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-29 15:36:49 -0800 |
| commit | 6d87d0ece58bc0022ca5247721a8eb06ef66b673 (patch) | |
| tree | cc12c2ec0defc67d4995423d99850311f2c7c0f0 | |
| parent | 5dbdb2d87c294401a22e6a6002f08ebc9fbea38b (diff) | |
mm: add prototype for __add_to_page_cache_locked()
Otherwise it causes a gcc warning:
mm/filemap.c:830:14: warning: no previous prototype for `__add_to_page_cache_locked' [-Wmissing-prototypes]
A previous attempt to make this function static led to compilation
errors when CONFIG_DEBUG_INFO_BTF is enabled because
__add_to_page_cache_locked() is referred to by BPF code.
Adding a prototype will silence the warning.
Link: https://lkml.kernel.org/r/1608693702-4665-1-git-send-email-jrdr.linux@gmail.com
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Cc: Alex Shi <alex.shi@linux.alibaba.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | include/linux/mm.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 5299b90a6c40..c1e908184442 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -216,6 +216,13 @@ int overcommit_kbytes_handler(struct ctl_table *, int, void *, size_t *, loff_t *); int overcommit_policy_handler(struct ctl_table *, int, void *, size_t *, loff_t *); +/* + * Any attempt to mark this function as static leads to build failure + * when CONFIG_DEBUG_INFO_BTF is enabled because __add_to_page_cache_locked() + * is referred to by BPF code. This must be visible for error injection. + */ +int __add_to_page_cache_locked(struct page *page, struct address_space *mapping, + pgoff_t index, gfp_t gfp, void **shadowp); #define nth_page(page,n) pfn_to_page(page_to_pfn((page)) + (n)) |