diff options
| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2023-07-24 19:54:02 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-08-18 10:12:51 -0700 |
| commit | 350f6bbca1de515cd7519a33661cefc93ea06054 (patch) | |
| tree | 097b836f7ea8c5145eae8c2c37dcee42591d148a /include | |
| parent | mm: remove CONFIG_PER_VMA_LOCK ifdefs (diff) | |
| download | linux-350f6bbca1de515cd7519a33661cefc93ea06054.tar.gz linux-350f6bbca1de515cd7519a33661cefc93ea06054.zip | |
mm: allow per-VMA locks on file-backed VMAs
Remove the TCP layering violation by allowing per-VMA locks on all VMAs.
The fault path will immediately fail in handle_mm_fault(). There may be a
small performance reduction from this patch as a little unnecessary work
will be done on each page fault. See later patches for the improvement.
Link: https://lkml.kernel.org/r/20230724185410.1124082-3-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Suren Baghdasaryan <surenb@google.com>
Cc: Arjun Roy <arjunroy@google.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Punit Agrawal <punit.agrawal@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/net_mm.h | 17 | ||||
| -rw-r--r-- | include/net/tcp.h | 1 |
2 files changed, 0 insertions, 18 deletions
diff --git a/include/linux/net_mm.h b/include/linux/net_mm.h deleted file mode 100644 index b298998bd5a0..000000000000 --- a/include/linux/net_mm.h +++ /dev/null @@ -1,17 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ -#ifdef CONFIG_MMU - -#ifdef CONFIG_INET -extern const struct vm_operations_struct tcp_vm_ops; -static inline bool vma_is_tcp(const struct vm_area_struct *vma) -{ - return vma->vm_ops == &tcp_vm_ops; -} -#else -static inline bool vma_is_tcp(const struct vm_area_struct *vma) -{ - return false; -} -#endif /* CONFIG_INET*/ - -#endif /* CONFIG_MMU */ diff --git a/include/net/tcp.h b/include/net/tcp.h index 0ca972ebd3dd..3a818fe1a8a5 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -45,7 +45,6 @@ #include <linux/memcontrol.h> #include <linux/bpf-cgroup.h> #include <linux/siphash.h> -#include <linux/net_mm.h> extern struct inet_hashinfo tcp_hashinfo; |