[PATCH RFC PKS/PMEM 34/58] fs/erofs: Utilize new kmap_thread()
From: ira.weiny@intel.com
Date: 2020-10-09 20:02:21
Also in:
amd-gfx, bpf, ceph-devel, dri-devel, intel-gfx, intel-wired-lan, io-uring, kexec, kvm, linux-bcache, 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, netdev, nvdimm, target-devel, xen-devel
Subsystem:
erofs file system, filesystems (vfs and infrastructure), the rest · Maintainers:
Gao Xiang, Chao Yu, 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: Gao Xiang <xiang@kernel.org> Cc: Chao Yu <chao@kernel.org> Signed-off-by: Ira Weiny <ira.weiny@intel.com> --- fs/erofs/super.c | 4 ++-- fs/erofs/xattr.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/fs/erofs/super.c b/fs/erofs/super.c
index ddaa516c008a..41696b60f1b3 100644
--- a/fs/erofs/super.c
+++ b/fs/erofs/super.c@@ -139,7 +139,7 @@ static int erofs_read_superblock(struct super_block *sb) sbi = EROFS_SB(sb); - data = kmap(page); + data = kmap_thread(page); dsb = (struct erofs_super_block *)(data + EROFS_SUPER_OFFSET); ret = -EINVAL;
@@ -189,7 +189,7 @@ static int erofs_read_superblock(struct super_block *sb) } ret = 0; out: - kunmap(page); + kunmap_thread(page); put_page(page); return ret; }
diff --git a/fs/erofs/xattr.c b/fs/erofs/xattr.c
index c8c381eadcd6..1771baa99d77 100644
--- a/fs/erofs/xattr.c
+++ b/fs/erofs/xattr.c@@ -20,7 +20,7 @@ static inline void xattr_iter_end(struct xattr_iter *it, bool atomic) { /* the only user of kunmap() is 'init_inode_xattrs' */ if (!atomic) - kunmap(it->page); + kunmap_thread(it->page); else kunmap_atomic(it->kaddr);
@@ -96,7 +96,7 @@ static int init_inode_xattrs(struct inode *inode) } /* read in shared xattr array (non-atomic, see kmalloc below) */ - it.kaddr = kmap(it.page); + it.kaddr = kmap_thread(it.page); atomic_map = false; ih = (struct erofs_xattr_ibody_header *)(it.kaddr + it.ofs);
--
2.28.0.rc0.12.gb6a658bd00c9