The patch titled
Subject: mm: mmap: increase sockets maximum memory size pgoff for 32bits
has been added to the -mm tree. Its filename is
mm-mmap-increase-sockets-maximum-memory-size-pgoff-for-32bits.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-mmap-increase-sockets-maximum-memory-size-pgoff-for-32bits.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-mmap-increase-sockets-maximum-memory-size-pgoff-for-32bits.patch
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------------------------------------------------------
From: Ivan Khoronzhuk <ivan.khoronzhuk@xxxxxxxxxx>
Subject: mm: mmap: increase sockets maximum memory size pgoff for 32bits
The AF_XDP sockets umem mapping interface uses XDP_UMEM_PGOFF_FILL_RING
and XDP_UMEM_PGOFF_COMPLETION_RING offsets. These offsets are established
already and are part of the configuration interface.
But for 32-bit systems, using AF_XDP socket configuration, these values
are too large to pass the maximum allowed file size verification. The
offsets can be tuned off, but instead of changing the existing interface,
let's extend the max allowed file size for sockets.
Link: http://lkml.kernel.org/r/20190812124326.32146-1-ivan.khoronzhuk@xxxxxxxxxx
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@xxxxxxxxxx>
Cc: Björn Töpel <bjorn.topel@xxxxxxxxx>
Cc: Alexei Starovoitov <ast@xxxxxxxxxx>
Cc: Magnus Karlsson <magnus.karlsson@xxxxxxxxx>
Cc: Daniel Borkmann <daniel@xxxxxxxxxxxxx>
Cc: David Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/mmap.c | 3 +++
1 file changed, 3 insertions(+)
--- a/mm/mmap.c~mm-mmap-increase-sockets-maximum-memory-size-pgoff-for-32bits
+++ a/mm/mmap.c
@@ -1358,6 +1358,9 @@ static inline u64 file_mmap_size_max(str
if (S_ISBLK(inode->i_mode))
return MAX_LFS_FILESIZE;
+ if (S_ISSOCK(inode->i_mode))
+ return MAX_LFS_FILESIZE;
+
/* Special "we do even unsigned file positions" case */
if (file->f_mode & FMODE_UNSIGNED_OFFSET)
return 0;
_
Patches currently in -mm which might be from ivan.khoronzhuk@xxxxxxxxxx are
mm-mmap-increase-sockets-maximum-memory-size-pgoff-for-32bits.patch
