[PATCH RFC PKS/PMEM 37/58] fs/ext2: Utilize new kmap_thread()
From: <hidden>
Date: 2020-10-09 19:59:54
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, lkml, netdev, nvdimm, target-devel, xen-devel
Subsystem:
ext2 file system, filesystems (vfs and infrastructure), the rest · Maintainers:
Jan Kara, Alexander Viro, Christian Brauner, Linus Torvalds
From: Ira Weiny <redacted> These kmap() calls are localized to a single thread. To avoid the over head of global PKRS update use the new kmap_thread() call instead. Cc: Jan Kara <jack@suse.com> Signed-off-by: Ira Weiny <redacted> --- fs/ext2/dir.c | 2 +- fs/ext2/ext2.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/ext2/dir.c b/fs/ext2/dir.c
index f3194bf20733..abe97ba458c8 100644
--- a/fs/ext2/dir.c
+++ b/fs/ext2/dir.c@@ -196,7 +196,7 @@ static struct page * ext2_get_page(struct inode *dir, unsigned long n, struct address_space *mapping = dir->i_mapping; struct page *page = read_mapping_page(mapping, n, NULL); if (!IS_ERR(page)) { - kmap(page); + kmap_thread(page); if (unlikely(!PageChecked(page))) { if (PageError(page) || !ext2_check_page(page, quiet)) goto fail;
diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h
index 021ec8b42ac3..9bcb6714c255 100644
--- a/fs/ext2/ext2.h
+++ b/fs/ext2/ext2.h@@ -749,7 +749,7 @@ extern struct ext2_dir_entry_2 * ext2_dotdot (struct inode *, struct page **); extern void ext2_set_link(struct inode *, struct ext2_dir_entry_2 *, struct page *, struct inode *, int); static inline void ext2_put_page(struct page *page) { - kunmap(page); + kunmap_thread(page); put_page(page); }
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2.28.0.rc0.12.gb6a658bd00c9