diff options
| author |   Arnd Bergmann <arnd@arndb.de> | 2018-04-13 15:35:27 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2018-04-13 17:10:27 -0700 |
| commit | 453972283dcbf61fa33c8c0540d9b5e0caf9d570 (patch) | |
| tree | cd2f4b761b02f9345b541b56a109ee8814b28ce3 /mm | |
| parent | mm/gup.c: document return value (diff) | |
| download | wireguard-linux-453972283dcbf61fa33c8c0540d9b5e0caf9d570.tar.xz wireguard-linux-453972283dcbf61fa33c8c0540d9b5e0caf9d570.zip | |
mm/filemap.c: provide dummy filemap_page_mkwrite() for NOMMU
Building orangefs on MMU-less machines now results in a link error
because of the newly introduced use of the filemap_page_mkwrite()
function:
ERROR: "filemap_page_mkwrite" [fs/orangefs/orangefs.ko] undefined!
This adds a dummy version for it, similar to the existing
generic_file_mmap and generic_file_readonly_mmap stubs in the same file,
to avoid the link error without adding #ifdefs in each file system that
uses these.
Link: http://lkml.kernel.org/r/20180409105555.2439976-1-arnd@arndb.de
Fixes: a5135eeab2e5 ("orangefs: implement vm_ops->fault")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Martin Brandenburg <martin@omnibond.com>
Cc: Mike Marshall <hubcap@omnibond.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/filemap.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index ab77e19ab09c..9276bdb2343c 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -2719,7 +2719,6 @@ out: sb_end_pagefault(inode->i_sb); return ret; } -EXPORT_SYMBOL(filemap_page_mkwrite); const struct vm_operations_struct generic_file_vm_ops = { .fault = filemap_fault, @@ -2750,6 +2749,10 @@ int generic_file_readonly_mmap(struct file *file, struct vm_area_struct *vma) return generic_file_mmap(file, vma); } #else +int filemap_page_mkwrite(struct vm_fault *vmf) +{ + return -ENOSYS; +} int generic_file_mmap(struct file * file, struct vm_area_struct * vma) { return -ENOSYS; @@ -2760,6 +2763,7 @@ int generic_file_readonly_mmap(struct file * file, struct vm_area_struct * vma) } #endif /* CONFIG_MMU */ +EXPORT_SYMBOL(filemap_page_mkwrite); EXPORT_SYMBOL(generic_file_mmap); EXPORT_SYMBOL(generic_file_readonly_mmap); |