Matthew Wilcox (Oracle) 438191cfde ramfs: fix nommu mmap with gaps in the page cache ... [ Upstream commit 50b7d85680086126d7bd91dae81d57d4cb1ab6b7 ] ramfs needs to check that pages are both physically contiguous and contiguous in the file. If the page cache happens to have, eg, page A for index 0 of the file, no page for index 1, and page A+1 for index 2, then an mmap of the first two pages of the file will succeed when it should fail. Fixes: 642fb4d1f1 ("[PATCH] NOMMU: Provide shared-writable mmap support on ramfs") Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: David Howells <dhowells@redhat.com> Link: https://lkml.kernel.org/r/20200914122239.GO6583@casper.infradead.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2020-10-30 10:38:21 +01:00
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file-mmu.c	ipc/shm: fix crash if CONFIG_SHMEM is not set	2016-09-19 15:36:17 -07:00
file-nommu.c	ramfs: fix nommu mmap with gaps in the page cache	2020-10-30 10:38:21 +01:00
inode.c	ramfs: Implement show_options	2017-07-06 03:31:46 -04:00
internal.h	fs/ramfs: move ramfs_aops to inode.c	2014-01-23 16:36:58 -08:00
Makefile	Remove valueless definition of hard-selected RAMFS option	2007-10-17 08:42:56 -07:00