[PATCH RFC PKS/PMEM 28/58] fs/cachefiles: Utilize new kmap_thread()
From: ira.weiny@intel.com
Date: 2020-10-09 20:04:04
Also in:
amd-gfx, bpf, ceph-devel, dri-devel, intel-gfx, intel-wired-lan, io-uring, kexec, kvm, linux-bcache, linux-block, linux-btrfs, linux-cifs, linux-doc, linux-efi, linux-ext4, linux-f2fs-devel, linux-fsdevel, linux-kselftest, linux-mm, linux-mmc, linux-nfs, linux-rdma, linux-scsi, linux-um, linuxppc-dev, lkml, nvdimm, target-devel, xen-devel
Subsystem:
cachefiles: fs-cache backend for caching on mounted filesystems, filesystems (vfs and infrastructure), the rest · Maintainers:
David Howells, Alexander Viro, Christian Brauner, Linus Torvalds
From: Ira Weiny <ira.weiny@intel.com> The kmap() calls in this FS are localized to a single thread. To avoid the over head of global PKRS updates use the new kmap_thread() call. Cc: David Howells <dhowells@redhat.com> Signed-off-by: Ira Weiny <ira.weiny@intel.com> --- fs/cachefiles/rdwr.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/cachefiles/rdwr.c b/fs/cachefiles/rdwr.c
index 3080cda9e824..2468e5c067ba 100644
--- a/fs/cachefiles/rdwr.c
+++ b/fs/cachefiles/rdwr.c@@ -936,9 +936,9 @@ int cachefiles_write_page(struct fscache_storage *op, struct page *page) } } - data = kmap(page); + data = kmap_thread(page); ret = kernel_write(file, data, len, &pos); - kunmap(page); + kunmap_thread(page); fput(file); if (ret != len) goto error_eio;
--
2.28.0.rc0.12.gb6a658bd00c9