diff options
| author | Christoph Hellwig | 2019-07-11 20:55:20 -0700 |
|---|---|---|
| committer | Linus Torvalds | 2019-07-12 11:05:43 -0700 |
| commit | 6c45b454191b330c8bc21d1ed3cf39bb6da1a4eb (patch) | |
| tree | b4dfe0460ae4f6449c1735002e62ec345a3979a5 /mm | |
| parent | d322a8e5e3e9742fa6b76a207e5df57e03f318f9 (diff) | |
mm/filemap: don't cast ->readpage to filler_t for do_read_cache_page
We can just pass a NULL filler and do the right thing inside of
do_read_cache_page based on the NULL parameter.
Link: http://lkml.kernel.org/r/20190520055731.24538-3-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Sami Tolvanen <samitolvanen@google.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 | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index d6f7596f148f..1e5e006b8557 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -2825,7 +2825,11 @@ repeat: } filler: - err = filler(data, page); + if (filler) + err = filler(data, page); + else + err = mapping->a_ops->readpage(data, page); + if (err < 0) { put_page(page); return ERR_PTR(err); @@ -2937,9 +2941,7 @@ struct page *read_cache_page_gfp(struct address_space *mapping, pgoff_t index, gfp_t gfp) { - filler_t *filler = (filler_t *)mapping->a_ops->readpage; - - return do_read_cache_page(mapping, index, filler, NULL, gfp); + return do_read_cache_page(mapping, index, NULL, NULL, gfp); } EXPORT_SYMBOL(read_cache_page_gfp); |