From: Nate Diller <nate.diller@gmail.com>
To: Andrew Morton <akpm@osdl.org>, Alexander Viro <viro@zeniv.linux.org.uk>
Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: [PATCH 10/13] reiser4: use zero_user_page
Date: Tue, 10 Apr 2007 20:36:00 -0700 [thread overview]
Message-ID: <20070411033600.11000.64024.patchbomb.py@localhost> (raw)
In-Reply-To: <20070411033600.11000.38285.patchbomb.py@localhost>
Use zero_user_page() instead of open-coding it. Also replace the (mostly)
redundant zero_page() function.
Signed-off-by: Nate Diller <nate.diller@gmail.com>
---
diff -urpN -X dontdiff linux-2.6.21-rc6-mm1/fs/reiser4/plugin/file/cryptcompress.c linux-2.6.21-rc6-mm1-test/fs/reiser4/plugin/file/cryptcompress.c
--- linux-2.6.21-rc6-mm1/fs/reiser4/plugin/file/cryptcompress.c 2007-04-10 17:15:04.000000000 -0700
+++ linux-2.6.21-rc6-mm1-test/fs/reiser4/plugin/file/cryptcompress.c 2007-04-10 18:35:44.000000000 -0700
@@ -1897,7 +1897,6 @@ static int
write_hole(struct inode *inode, reiser4_cluster_t * clust, loff_t file_off,
loff_t to_file)
{
- char *data;
int result = 0;
unsigned cl_off, cl_count = 0;
unsigned to_pg, pg_off;
@@ -1934,10 +1933,7 @@ write_hole(struct inode *inode, reiser4_
to_pg = min_count(PAGE_CACHE_SIZE - pg_off, cl_count);
lock_page(page);
- data = kmap_atomic(page, KM_USER0);
- memset(data + pg_off, 0, to_pg);
- flush_dcache_page(page);
- kunmap_atomic(data, KM_USER0);
+ zero_user_page(page, pg_off, to_pg);
SetPageUptodate(page);
unlock_page(page);
@@ -2167,7 +2163,6 @@ read_some_cluster_pages(struct inode *in
if (clust->nr_pages) {
int off;
- char *data;
struct page * pg;
assert("edward-1419", clust->pages != NULL);
pg = clust->pages[clust->nr_pages - 1];
@@ -2175,10 +2170,7 @@ read_some_cluster_pages(struct inode *in
off = off_to_pgoff(win->off+win->count+win->delta);
if (off) {
lock_page(pg);
- data = kmap_atomic(pg, KM_USER0);
- memset(data + off, 0, PAGE_CACHE_SIZE - off);
- flush_dcache_page(pg);
- kunmap_atomic(data, KM_USER0);
+ zero_user_page(pg, off, PAGE_CACHE_SIZE - off);
unlock_page(pg);
}
}
@@ -2217,20 +2209,15 @@ read_some_cluster_pages(struct inode *in
(count_to_nrpages(inode->i_size) <= pg->index)) {
/* .. and appended,
so set zeroes to the rest */
- char *data;
int offset;
lock_page(pg);
- data = kmap_atomic(pg, KM_USER0);
-
assert("edward-1260",
count_to_nrpages(win->off + win->count +
win->delta) - 1 == i);
offset =
off_to_pgoff(win->off + win->count + win->delta);
- memset(data + offset, 0, PAGE_CACHE_SIZE - offset);
- flush_dcache_page(pg);
- kunmap_atomic(data, KM_USER0);
+ zero_user_page(pg, offset, PAGE_CACHE_SIZE - offset);
unlock_page(pg);
/* still not uptodate */
break;
diff -urpN -X dontdiff linux-2.6.21-rc6-mm1/fs/reiser4/plugin/file/file.c linux-2.6.21-rc6-mm1-test/fs/reiser4/plugin/file/file.c
--- linux-2.6.21-rc6-mm1/fs/reiser4/plugin/file/file.c 2007-04-10 17:15:04.000000000 -0700
+++ linux-2.6.21-rc6-mm1-test/fs/reiser4/plugin/file/file.c 2007-04-10 18:35:44.000000000 -0700
@@ -433,7 +433,6 @@ static int shorten_file(struct inode *in
struct page *page;
int padd_from;
unsigned long index;
- char *kaddr;
unix_file_info_t *uf_info;
/*
@@ -523,10 +522,7 @@ static int shorten_file(struct inode *in
lock_page(page);
assert("vs-1066", PageLocked(page));
- kaddr = kmap_atomic(page, KM_USER0);
- memset(kaddr + padd_from, 0, PAGE_CACHE_SIZE - padd_from);
- flush_dcache_page(page);
- kunmap_atomic(kaddr, KM_USER0);
+ zero_user_page(page, padd_from, PAGE_CACHE_SIZE - padd_from);
unlock_page(page);
page_cache_release(page);
/* the below does up(sbinfo->delete_mutex). Do not get confused */
diff -urpN -X dontdiff linux-2.6.21-rc6-mm1/fs/reiser4/plugin/item/ctail.c linux-2.6.21-rc6-mm1-test/fs/reiser4/plugin/item/ctail.c
--- linux-2.6.21-rc6-mm1/fs/reiser4/plugin/item/ctail.c 2007-04-10 17:15:04.000000000 -0700
+++ linux-2.6.21-rc6-mm1-test/fs/reiser4/plugin/item/ctail.c 2007-04-10 18:35:44.000000000 -0700
@@ -627,11 +627,7 @@ int do_readpage_ctail(struct inode * ino
#endif
case FAKE_DISK_CLUSTER:
/* fill the page by zeroes */
- data = kmap_atomic(page, KM_USER0);
-
- memset(data, 0, PAGE_CACHE_SIZE);
- flush_dcache_page(page);
- kunmap_atomic(data, KM_USER0);
+ zero_user_page(page, 0, PAGE_CACHE_SIZE);
SetPageUptodate(page);
break;
case PREP_DISK_CLUSTER:
diff -urpN -X dontdiff linux-2.6.21-rc6-mm1/fs/reiser4/plugin/item/extent_file_ops.c linux-2.6.21-rc6-mm1-test/fs/reiser4/plugin/item/extent_file_ops.c
--- linux-2.6.21-rc6-mm1/fs/reiser4/plugin/item/extent_file_ops.c 2007-04-10 18:05:52.000000000 -0700
+++ linux-2.6.21-rc6-mm1-test/fs/reiser4/plugin/item/extent_file_ops.c 2007-04-10 18:35:44.000000000 -0700
@@ -1083,17 +1083,6 @@ ssize_t reiser4_write_extent(struct file
return (count - left) ? (count - left) : -EFAULT;
}
-static inline void zero_page(struct page *page)
-{
- char *kaddr = kmap_atomic(page, KM_USER0);
-
- memset(kaddr, 0, PAGE_CACHE_SIZE);
- flush_dcache_page(page);
- kunmap_atomic(kaddr, KM_USER0);
- SetPageUptodate(page);
- unlock_page(page);
-}
-
int reiser4_do_readpage_extent(reiser4_extent * ext, reiser4_block_nr pos,
struct page *page)
{
@@ -1115,7 +1104,9 @@ int reiser4_do_readpage_extent(reiser4_e
*/
j = jfind(mapping, index);
if (j == NULL) {
- zero_page(page);
+ zero_user_page(page, 0, PAGE_CACHE_SIZE);
+ SetPageUptodate(page);
+ unlock_page(page);
return 0;
}
spin_lock_jnode(j);
@@ -1128,7 +1119,9 @@ int reiser4_do_readpage_extent(reiser4_e
block = *jnode_get_io_block(j);
spin_unlock_jnode(j);
if (block == 0) {
- zero_page(page);
+ zero_user_page(page, 0, PAGE_CACHE_SIZE);
+ SetPageUptodate(page);
+ unlock_page(page);
jput(j);
return 0;
}
diff -urpN -X dontdiff linux-2.6.21-rc6-mm1/fs/reiser4/plugin/item/tail.c linux-2.6.21-rc6-mm1-test/fs/reiser4/plugin/item/tail.c
--- linux-2.6.21-rc6-mm1/fs/reiser4/plugin/item/tail.c 2007-04-10 17:15:04.000000000 -0700
+++ linux-2.6.21-rc6-mm1-test/fs/reiser4/plugin/item/tail.c 2007-04-10 18:35:44.000000000 -0700
@@ -391,12 +391,8 @@ static int do_readpage_tail(uf_coord_t *
}
done:
- if (mapped != PAGE_CACHE_SIZE) {
- pagedata = kmap_atomic(page, KM_USER0);
- memset(pagedata + mapped, 0, PAGE_CACHE_SIZE - mapped);
- flush_dcache_page(page);
- kunmap_atomic(pagedata, KM_USER0);
- }
+ if (mapped != PAGE_CACHE_SIZE)
+ zero_user_page(page, mapped, PAGE_CACHE_SIZE - mapped);
SetPageUptodate(page);
out_unlock_page:
unlock_page(page);
next prev parent reply other threads:[~2007-04-11 3:39 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-11 3:36 [PATCH 1/13] fs: convert core functions to zero_user_page Nate Diller
2007-04-11 3:36 ` [PATCH 2/13] affs: use zero_user_page Nate Diller
2007-04-11 3:36 ` [PATCH 12/13] xfs: " Nate Diller
2007-04-11 3:36 ` [PATCH 13/13] fs: deprecate memclear_highpage_flush Nate Diller
2007-04-11 5:58 ` Andrew Morton
2007-04-11 3:36 ` [PATCH 11/13] reiserfs: use zero_user_page Nate Diller
2007-04-11 3:36 ` [PATCH 9/13] ocfs2: " Nate Diller
2007-04-11 3:36 ` [PATCH 5/13] ext4: " Nate Diller
2007-04-11 4:14 ` Andreas Dilger
2007-04-11 3:36 ` [PATCH 3/13] ecryptfs: " Nate Diller
2007-04-11 3:36 ` Nate Diller [this message]
2007-04-11 3:36 ` [PATCH 7/13] nfs: " Nate Diller
2007-04-11 3:36 ` [PATCH 4/13] ext3: " Nate Diller
2007-04-11 3:36 ` [PATCH 6/13] gfs2: " Nate Diller
2007-04-11 3:36 ` [PATCH 8/13] ntfs: " Nate Diller
2007-04-11 5:56 ` [PATCH 1/13] fs: convert core functions to zero_user_page Andrew Morton
2007-04-11 6:14 ` Nate Diller
2007-04-11 14:54 ` Jörn Engel
2007-04-11 14:54 ` Jörn Engel
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=20070411033600.11000.64024.patchbomb.py@localhost \
--to=nate.diller@gmail.com \
--cc=akpm@osdl.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=viro@zeniv.linux.org.uk \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.