Explicitly specify the mm to pass to shmem_insert_page() when
the pkram_stream is initialized rather than use the mm of the
current thread. This will allow for multiple kernel threads to
target the same mm when inserting pages in parallel.
Signed-off-by: Anthony Yznaga <anthony.yznaga@xxxxxxxxxx>
---
include/linux/pkram.h | 1 +
mm/pkram.c | 1 +
mm/shmem_pkram.c | 2 +-
3 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/include/linux/pkram.h b/include/linux/pkram.h
index b47b3aef16e3..cbb79d2803c0 100644
--- a/include/linux/pkram.h
+++ b/include/linux/pkram.h
@@ -18,6 +18,7 @@ struct pkram_stream {
unsigned long next_index;
struct address_space *mapping;
+ struct mm_struct *mm;
/* byte data */
struct page *data_page;
diff --git a/mm/pkram.c b/mm/pkram.c
index 4d4d836fea53..a5e539052af6 100644
--- a/mm/pkram.c
+++ b/mm/pkram.c
@@ -565,6 +565,7 @@ static void pkram_stream_init(struct pkram_stream *ps,
memset(ps, 0, sizeof(*ps));
ps->gfp_mask = gfp_mask;
ps->node = node;
+ ps->mm = current->mm;
}
static void pkram_stream_init_obj(struct pkram_stream *ps, struct pkram_obj *obj)
diff --git a/mm/shmem_pkram.c b/mm/shmem_pkram.c
index 3fa9cfbe0003..c97d64393822 100644
--- a/mm/shmem_pkram.c
+++ b/mm/shmem_pkram.c
@@ -236,7 +236,7 @@ static int load_file_content(struct pkram_stream *ps)
if (!page)
break;
- err = shmem_insert_page(current->mm, ps->mapping->host, index, page);
+ err = shmem_insert_page(ps->mm, ps->mapping->host, index, page);
put_page(page);
} while (!err);
--
2.13.3
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