Messages in this thread Patch in this message | | | From | Anthony Yznaga <> | Subject | [RFC 24/43] mm: shmem: prevent swapping of PKRAM-enabled tmpfs pages | Date | Wed, 6 May 2020 17:41:50 -0700 |
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Workaround the limitation that shmem pages must be in memory in order to be preserved by preventing them from being swapped out in the first place. Do this by marking shmem pages associated with a PKRAM node as unevictable.
Signed-off-by: Anthony Yznaga <anthony.yznaga@oracle.com> --- mm/shmem.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/mm/shmem.c b/mm/shmem.c index 9c28ef657cd1..13475073fb52 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -2360,6 +2360,8 @@ static struct inode *shmem_get_inode(struct super_block *sb, const struct inode INIT_LIST_HEAD(&info->swaplist); simple_xattrs_init(&info->xattrs); cache_no_acl(inode); + if (sbinfo->pkram) + mapping_set_unevictable(inode->i_mapping); switch (mode & S_IFMT) { default: -- 2.13.3
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