CEPH-Devel Archive on lore.kernel.org
 help / color / Atom feed
From: ira.weiny@intel.com
To: Andrew Morton <akpm@linux-foundation.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	Andy Lutomirski <luto@kernel.org>,
	Peter Zijlstra <peterz@infradead.org>
Cc: Ira Weiny <ira.weiny@intel.com>,
	David Howells <dhowells@redhat.com>,
	x86@kernel.org, Dave Hansen <dave.hansen@linux.intel.com>,
	Dan Williams <dan.j.williams@intel.com>,
	Fenghua Yu <fenghua.yu@intel.com>,
	linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-nvdimm@lists.01.org, linux-fsdevel@vger.kernel.org,
	linux-mm@kvack.org, linux-kselftest@vger.kernel.org,
	linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org,
	netdev@vger.kernel.org, bpf@vger.kernel.org,
	kexec@lists.infradead.org, linux-bcache@vger.kernel.org,
	linux-mtd@lists.infradead.org, devel@driverdev.osuosl.org,
	linux-efi@vger.kernel.org, linux-mmc@vger.kernel.org,
	linux-scsi@vger.kernel.org, target-devel@vger.kernel.org,
	linux-nfs@vger.kernel.org, ceph-devel@vger.kernel.org,
	linux-ext4@vger.kernel.org, linux-aio@kvack.org,
	io-uring@vger.kernel.org, linux-erofs@lists.ozlabs.org,
	linux-um@lists.infradead.org,
	linux-ntfs-dev@lists.sourceforge.net,
	reiserfs-devel@vger.kernel.org,
	linux-f2fs-devel@lists.sourceforge.net,
	linux-nilfs@vger.kernel.org, cluster-devel@redhat.com,
	ecryptfs@vger.kernel.org, linux-cifs@vger.kernel.org,
	linux-btrfs@vger.kernel.org, linux-afs@lists.infradead.org,
	linux-rdma@vger.kernel.org, amd-gfx@lists.freedesktop.org,
	dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org,
	drbd-dev@lists.linbit.com, linux-block@vger.kernel.org,
	xen-devel@lists.xenproject.org, linux-cachefs@redhat.com,
	samba-technical@lists.samba.org,
	intel-wired-lan@lists.osuosl.org
Subject: [PATCH RFC PKS/PMEM 12/58] fs/afs: Utilize new kmap_thread()
Date: Fri,  9 Oct 2020 12:49:47 -0700
Message-ID: <20201009195033.3208459-13-ira.weiny@intel.com> (raw)
In-Reply-To: <20201009195033.3208459-1-ira.weiny@intel.com>

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/afs/dir.c      | 16 ++++++++--------
 fs/afs/dir_edit.c | 16 ++++++++--------
 fs/afs/mntpt.c    |  4 ++--
 fs/afs/write.c    |  4 ++--
 4 files changed, 20 insertions(+), 20 deletions(-)

diff --git a/fs/afs/dir.c b/fs/afs/dir.c
index 1d2e61e0ab04..5d01cdb590de 100644
--- a/fs/afs/dir.c
+++ b/fs/afs/dir.c
@@ -127,14 +127,14 @@ static bool afs_dir_check_page(struct afs_vnode *dvnode, struct page *page,
 	qty /= sizeof(union afs_xdr_dir_block);
 
 	/* check them */
-	dbuf = kmap(page);
+	dbuf = kmap_thread(page);
 	for (tmp = 0; tmp < qty; tmp++) {
 		if (dbuf->blocks[tmp].hdr.magic != AFS_DIR_MAGIC) {
 			printk("kAFS: %s(%lx): bad magic %d/%d is %04hx\n",
 			       __func__, dvnode->vfs_inode.i_ino, tmp, qty,
 			       ntohs(dbuf->blocks[tmp].hdr.magic));
 			trace_afs_dir_check_failed(dvnode, off, i_size);
-			kunmap(page);
+			kunmap_thread(page);
 			trace_afs_file_error(dvnode, -EIO, afs_file_error_dir_bad_magic);
 			goto error;
 		}
@@ -146,7 +146,7 @@ static bool afs_dir_check_page(struct afs_vnode *dvnode, struct page *page,
 		((u8 *)&dbuf->blocks[tmp])[AFS_DIR_BLOCK_SIZE - 1] = 0;
 	}
 
-	kunmap(page);
+	kunmap_thread(page);
 
 checked:
 	afs_stat_v(dvnode, n_read_dir);
@@ -177,13 +177,13 @@ static bool afs_dir_check_pages(struct afs_vnode *dvnode, struct afs_read *req)
 		req->pos, req->index, req->nr_pages, req->offset);
 
 	for (i = 0; i < req->nr_pages; i++) {
-		dbuf = kmap(req->pages[i]);
+		dbuf = kmap_thread(req->pages[i]);
 		for (j = 0; j < qty; j++) {
 			union afs_xdr_dir_block *block = &dbuf->blocks[j];
 
 			pr_warn("[%02x] %32phN\n", i * qty + j, block);
 		}
-		kunmap(req->pages[i]);
+		kunmap_thread(req->pages[i]);
 	}
 	return false;
 }
@@ -481,7 +481,7 @@ static int afs_dir_iterate(struct inode *dir, struct dir_context *ctx,
 
 		limit = blkoff & ~(PAGE_SIZE - 1);
 
-		dbuf = kmap(page);
+		dbuf = kmap_thread(page);
 
 		/* deal with the individual blocks stashed on this page */
 		do {
@@ -489,7 +489,7 @@ static int afs_dir_iterate(struct inode *dir, struct dir_context *ctx,
 					       sizeof(union afs_xdr_dir_block)];
 			ret = afs_dir_iterate_block(dvnode, ctx, dblock, blkoff);
 			if (ret != 1) {
-				kunmap(page);
+				kunmap_thread(page);
 				goto out;
 			}
 
@@ -497,7 +497,7 @@ static int afs_dir_iterate(struct inode *dir, struct dir_context *ctx,
 
 		} while (ctx->pos < dir->i_size && blkoff < limit);
 
-		kunmap(page);
+		kunmap_thread(page);
 		ret = 0;
 	}
 
diff --git a/fs/afs/dir_edit.c b/fs/afs/dir_edit.c
index b108528bf010..35ed6828e205 100644
--- a/fs/afs/dir_edit.c
+++ b/fs/afs/dir_edit.c
@@ -218,7 +218,7 @@ void afs_edit_dir_add(struct afs_vnode *vnode,
 	need_slots = round_up(12 + name->len + 1 + 4, AFS_DIR_DIRENT_SIZE);
 	need_slots /= AFS_DIR_DIRENT_SIZE;
 
-	meta_page = kmap(page0);
+	meta_page = kmap_thread(page0);
 	meta = &meta_page->blocks[0];
 	if (i_size == 0)
 		goto new_directory;
@@ -247,7 +247,7 @@ void afs_edit_dir_add(struct afs_vnode *vnode,
 				set_page_private(page, 1);
 				SetPagePrivate(page);
 			}
-			dir_page = kmap(page);
+			dir_page = kmap_thread(page);
 		}
 
 		/* Abandon the edit if we got a callback break. */
@@ -284,7 +284,7 @@ void afs_edit_dir_add(struct afs_vnode *vnode,
 
 		if (page != page0) {
 			unlock_page(page);
-			kunmap(page);
+			kunmap_thread(page);
 			put_page(page);
 		}
 	}
@@ -323,7 +323,7 @@ void afs_edit_dir_add(struct afs_vnode *vnode,
 	afs_set_contig_bits(block, slot, need_slots);
 	if (page != page0) {
 		unlock_page(page);
-		kunmap(page);
+		kunmap_thread(page);
 		put_page(page);
 	}
 
@@ -337,7 +337,7 @@ void afs_edit_dir_add(struct afs_vnode *vnode,
 
 out_unmap:
 	unlock_page(page0);
-	kunmap(page0);
+	kunmap_thread(page0);
 	put_page(page0);
 	_leave("");
 	return;
@@ -346,7 +346,7 @@ void afs_edit_dir_add(struct afs_vnode *vnode,
 	trace_afs_edit_dir(vnode, why, afs_edit_dir_create_inval, 0, 0, 0, 0, name->name);
 	clear_bit(AFS_VNODE_DIR_VALID, &vnode->flags);
 	if (page != page0) {
-		kunmap(page);
+		kunmap_thread(page);
 		put_page(page);
 	}
 	goto out_unmap;
@@ -398,7 +398,7 @@ void afs_edit_dir_remove(struct afs_vnode *vnode,
 	need_slots = round_up(12 + name->len + 1 + 4, AFS_DIR_DIRENT_SIZE);
 	need_slots /= AFS_DIR_DIRENT_SIZE;
 
-	meta_page = kmap(page0);
+	meta_page = kmap_thread(page0);
 	meta = &meta_page->blocks[0];
 
 	/* Find a page that has sufficient slots available.  Each VM page
@@ -410,7 +410,7 @@ void afs_edit_dir_remove(struct afs_vnode *vnode,
 			page = find_lock_page(vnode->vfs_inode.i_mapping, index);
 			if (!page)
 				goto error;
-			dir_page = kmap(page);
+			dir_page = kmap_thread(page);
 		} else {
 			page = page0;
 			dir_page = meta_page;
diff --git a/fs/afs/mntpt.c b/fs/afs/mntpt.c
index 79bc5f1338ed..562454e2fd5c 100644
--- a/fs/afs/mntpt.c
+++ b/fs/afs/mntpt.c
@@ -139,11 +139,11 @@ static int afs_mntpt_set_params(struct fs_context *fc, struct dentry *mntpt)
 			return ret;
 		}
 
-		buf = kmap(page);
+		buf = kmap_thread(page);
 		ret = -EINVAL;
 		if (buf[size - 1] == '.')
 			ret = vfs_parse_fs_string(fc, "source", buf, size - 1);
-		kunmap(page);
+		kunmap_thread(page);
 		put_page(page);
 		if (ret < 0)
 			return ret;
diff --git a/fs/afs/write.c b/fs/afs/write.c
index 4b2265cb1891..c56e5b4db4ae 100644
--- a/fs/afs/write.c
+++ b/fs/afs/write.c
@@ -38,9 +38,9 @@ static int afs_fill_page(struct afs_vnode *vnode, struct key *key,
 	if (pos >= vnode->vfs_inode.i_size) {
 		p = pos & ~PAGE_MASK;
 		ASSERTCMP(p + len, <=, PAGE_SIZE);
-		data = kmap(page);
+		data = kmap_thread(page);
 		memset(data + p, 0, len);
-		kunmap(page);
+		kunmap_thread(page);
 		return 0;
 	}
 
-- 
2.28.0.rc0.12.gb6a658bd00c9


  parent reply index

Thread overview: 93+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-09 19:49 [PATCH RFC PKS/PMEM 00/58] PMEM: Introduce stray write protection for PMEM ira.weiny
2020-10-09 19:49 ` [PATCH RFC PKS/PMEM 01/58] x86/pks: Add a global pkrs option ira.weiny
2020-10-09 19:49 ` [PATCH RFC PKS/PMEM 02/58] x86/pks/test: Add testing for global option ira.weiny
2020-10-09 19:49 ` [PATCH RFC PKS/PMEM 03/58] memremap: Add zone device access protection ira.weiny
2020-10-09 19:49 ` [PATCH RFC PKS/PMEM 04/58] kmap: Add stray access protection for device pages ira.weiny
2020-10-09 19:49 ` [PATCH RFC PKS/PMEM 05/58] kmap: Introduce k[un]map_thread ira.weiny
2020-11-10  1:13   ` Thomas Gleixner
2020-11-10  4:59     ` Ira Weiny
2020-11-10  8:48       ` Thomas Gleixner
2020-10-09 19:49 ` [PATCH RFC PKS/PMEM 06/58] kmap: Introduce k[un]map_thread debugging ira.weiny
2020-10-09 19:49 ` [PATCH RFC PKS/PMEM 07/58] drivers/drbd: Utilize new kmap_thread() ira.weiny
2020-10-09 19:49 ` [PATCH RFC PKS/PMEM 08/58] drivers/firmware_loader: " ira.weiny
2020-10-09 19:49 ` [PATCH RFC PKS/PMEM 09/58] drivers/gpu: " ira.weiny
2020-10-09 22:03   ` Daniel Vetter
2020-10-10 23:01     ` Ira Weiny
2020-10-09 19:49 ` [PATCH RFC PKS/PMEM 10/58] drivers/rdma: " ira.weiny
2020-10-09 19:49 ` [PATCH RFC PKS/PMEM 11/58] drivers/net: " ira.weiny
2020-10-09 19:49 ` ira.weiny [this message]
2020-10-09 19:49 ` [PATCH RFC PKS/PMEM 13/58] fs/btrfs: " ira.weiny
2020-10-09 19:49 ` [PATCH RFC PKS/PMEM 14/58] fs/cifs: " ira.weiny
2020-10-09 19:49 ` [PATCH RFC PKS/PMEM 15/58] fs/ecryptfs: " ira.weiny
2020-10-09 19:49 ` [PATCH RFC PKS/PMEM 16/58] fs/gfs2: " ira.weiny
2020-10-09 19:49 ` [PATCH RFC PKS/PMEM 17/58] fs/nilfs2: " ira.weiny
2020-10-09 19:49 ` [PATCH RFC PKS/PMEM 18/58] fs/hfs: " ira.weiny
2020-10-09 19:49 ` [PATCH RFC PKS/PMEM 19/58] fs/hfsplus: " ira.weiny
2020-10-09 19:49 ` [PATCH RFC PKS/PMEM 20/58] fs/jffs2: " ira.weiny
2020-10-09 19:49 ` [PATCH RFC PKS/PMEM 21/58] fs/nfs: " ira.weiny
2020-10-09 19:49 ` [PATCH RFC PKS/PMEM 22/58] fs/f2fs: " ira.weiny
2020-10-09 21:34   ` Eric Biggers
2020-10-10  0:39     ` Matthew Wilcox
2020-10-10  1:30       ` Eric Biggers
2020-10-12  6:56         ` Ira Weiny
2020-10-12 16:19           ` Eric Biggers
2020-10-12 16:28             ` Dave Hansen
2020-10-12 16:44               ` Matthew Wilcox
2020-10-12 19:53                 ` Ira Weiny
2020-10-12 20:02                   ` Matthew Wilcox
2020-10-12 23:31                     ` Ira Weiny
2020-10-10  2:43     ` James Bottomley
2020-10-09 19:49 ` [PATCH RFC PKS/PMEM 23/58] fs/fuse: " ira.weiny
2020-10-09 19:49 ` [PATCH RFC PKS/PMEM 24/58] fs/freevxfs: " ira.weiny
2020-10-13 11:25   ` Christoph Hellwig
2020-10-13 20:52     ` Ira Weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 25/58] fs/reiserfs: " ira.weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 26/58] fs/zonefs: " ira.weiny
2020-10-12  2:30   ` Damien Le Moal
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 27/58] fs/ubifs: " ira.weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 28/58] fs/cachefiles: " ira.weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 29/58] fs/ntfs: " ira.weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 30/58] fs/romfs: " ira.weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 31/58] fs/vboxsf: " ira.weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 32/58] fs/hostfs: " ira.weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 33/58] fs/cramfs: " ira.weiny
2020-10-13 18:36   ` Nicolas Pitre
2020-10-13 18:44   ` Dan Williams
2020-10-13 19:36     ` Matthew Wilcox
2020-10-13 19:41       ` Dan Williams
2020-10-13 20:01       ` Al Viro
2020-10-13 20:50         ` Ira Weiny
2020-10-13 20:45       ` Ira Weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 34/58] fs/erofs: " ira.weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 35/58] fs: " ira.weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 36/58] fs/ext2: Use ext2_put_page ira.weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 37/58] fs/ext2: Utilize new kmap_thread() ira.weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 38/58] fs/isofs: " ira.weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 39/58] fs/jffs2: " ira.weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 40/58] net: " ira.weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 41/58] drivers/target: " ira.weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 42/58] drivers/scsi: " ira.weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 43/58] drivers/mmc: " ira.weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 44/58] drivers/xen: " ira.weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 45/58] drivers/firmware: " ira.weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 46/58] drives/staging: " ira.weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 47/58] drivers/mtd: " ira.weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 48/58] drivers/md: " ira.weiny
2020-10-10  2:20   ` Coly Li
2020-10-12  5:28     ` Ira Weiny
2020-10-12  7:40       ` Coly Li
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 49/58] drivers/misc: " ira.weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 50/58] drivers/android: " ira.weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 51/58] kernel: " ira.weiny
2020-10-10  3:43   ` Eric W. Biederman
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 52/58] mm: " ira.weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 53/58] lib: " ira.weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 54/58] powerpc: " ira.weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 55/58] samples: " ira.weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 56/58] dax: Stray access protection for dax_direct_access() ira.weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 57/58] nvdimm/pmem: Stray access protection for pmem->virt_addr ira.weiny
2020-10-10  2:53   ` John Hubbard
2020-10-12  5:52     ` Ira Weiny
2020-10-09 19:50 ` [PATCH RFC PKS/PMEM 58/58] [dax|pmem]: Enable stray access protection ira.weiny
2020-10-10 11:36 ` [PATCH RFC PKS/PMEM 10/58] drivers/rdma: Utilize new kmap_thread() Bernard Metzler
2020-10-12  4:47   ` Ira Weiny

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20201009195033.3208459-13-ira.weiny@intel.com \
    --to=ira.weiny@intel.com \
    --cc=akpm@linux-foundation.org \
    --cc=amd-gfx@lists.freedesktop.org \
    --cc=bp@alien8.de \
    --cc=bpf@vger.kernel.org \
    --cc=ceph-devel@vger.kernel.org \
    --cc=cluster-devel@redhat.com \
    --cc=dan.j.williams@intel.com \
    --cc=dave.hansen@linux.intel.com \
    --cc=devel@driverdev.osuosl.org \
    --cc=dhowells@redhat.com \
    --cc=drbd-dev@lists.linbit.com \
    --cc=dri-devel@lists.freedesktop.org \
    --cc=ecryptfs@vger.kernel.org \
    --cc=fenghua.yu@intel.com \
    --cc=intel-gfx@lists.freedesktop.org \
    --cc=intel-wired-lan@lists.osuosl.org \
    --cc=io-uring@vger.kernel.org \
    --cc=kexec@lists.infradead.org \
    --cc=kvm@vger.kernel.org \
    --cc=linux-afs@lists.infradead.org \
    --cc=linux-aio@kvack.org \
    --cc=linux-bcache@vger.kernel.org \
    --cc=linux-block@vger.kernel.org \
    --cc=linux-btrfs@vger.kernel.org \
    --cc=linux-cachefs@redhat.com \
    --cc=linux-cifs@vger.kernel.org \
    --cc=linux-doc@vger.kernel.org \
    --cc=linux-efi@vger.kernel.org \
    --cc=linux-erofs@lists.ozlabs.org \
    --cc=linux-ext4@vger.kernel.org \
    --cc=linux-f2fs-devel@lists.sourceforge.net \
    --cc=linux-fsdevel@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-kselftest@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=linux-mmc@vger.kernel.org \
    --cc=linux-mtd@lists.infradead.org \
    --cc=linux-nfs@vger.kernel.org \
    --cc=linux-nilfs@vger.kernel.org \
    --cc=linux-ntfs-dev@lists.sourceforge.net \
    --cc=linux-nvdimm@lists.01.org \
    --cc=linux-rdma@vger.kernel.org \
    --cc=linux-scsi@vger.kernel.org \
    --cc=linux-um@lists.infradead.org \
    --cc=linuxppc-dev@lists.ozlabs.org \
    --cc=luto@kernel.org \
    --cc=mingo@redhat.com \
    --cc=netdev@vger.kernel.org \
    --cc=peterz@infradead.org \
    --cc=reiserfs-devel@vger.kernel.org \
    --cc=samba-technical@lists.samba.org \
    --cc=target-devel@vger.kernel.org \
    --cc=tglx@linutronix.de \
    --cc=x86@kernel.org \
    --cc=xen-devel@lists.xenproject.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

CEPH-Devel Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/ceph-devel/0 ceph-devel/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 ceph-devel ceph-devel/ https://lore.kernel.org/ceph-devel \
		ceph-devel@vger.kernel.org
	public-inbox-index ceph-devel

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.ceph-devel


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git