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Date: Thu, 7 May 2020 15:51:00 +0800
From: Zhen Lei <thunder.leizhen@...wei.com>
To: Minchan Kim <minchan@...nel.org>, Nitin Gupta <ngupta@...are.org>,
"Sergey Senozhatsky" <sergey.senozhatsky.work@...il.com>,
Matthew Wilcox <willy@...radead.org>,
Jens Axboe <axboe@...nel.dk>, Coly Li <colyli@...e.de>,
Kent Overstreet <kent.overstreet@...il.com>,
"Alasdair Kergon" <agk@...hat.com>,
Mike Snitzer <snitzer@...hat.com>,
linux-block <linux-block@...r.kernel.org>,
Andrew Morton <akpm@...ux-foundation.org>,
linux-mm <linux-mm@...ck.org>, dm-devel <dm-devel@...hat.com>,
Song Liu <song@...nel.org>,
linux-raid <linux-raid@...r.kernel.org>,
linux-kernel <linux-kernel@...r.kernel.org>
CC: Zhen Lei <thunder.leizhen@...wei.com>
Subject: [PATCH v2 10/10] md: use PAGE_SECTORS to clean up code
Execute the following shell script:
C_FILES=`find drivers/md/ -name "*.c"`
for file in $C_FILES
do
#with brace
sed -i 's/(PAGE_SIZE \/ 512)/PAGE_SECTORS/g' $file
sed -i 's/(PAGE_SIZE\/512)/PAGE_SECTORS/g' $file
sed -i 's/(PAGE_SIZE >> 9)/PAGE_SECTORS/g' $file
sed -i 's/(PAGE_SIZE>>9)/PAGE_SECTORS/g' $file
#without brace
sed -i 's/PAGE_SIZE \/ 512/PAGE_SECTORS/g' $file
sed -i 's/PAGE_SIZE\/512/PAGE_SECTORS/g' $file
sed -i 's/PAGE_SIZE >> 9/PAGE_SECTORS/g' $file
sed -i 's/PAGE_SIZE>>9/PAGE_SECTORS/g' $file
done
In addition, eliminate below scripts/checkpatch.pl warning:
#44: FILE: drivers/md/dm-kcopyd.c:587:
+ unsigned nr_pages = dm_div_up(job->dests[0].count, PAGE_SECTORS);
Change to "unsigned int nr_pages".
Signed-off-by: Zhen Lei <thunder.leizhen@...wei.com>
---
drivers/md/dm-kcopyd.c | 2 +-
drivers/md/md-bitmap.c | 16 ++++++++--------
drivers/md/md.c | 6 +++---
drivers/md/raid1.c | 10 +++++-----
drivers/md/raid10.c | 20 ++++++++++----------
drivers/md/raid5.c | 4 ++--
6 files changed, 29 insertions(+), 29 deletions(-)
diff --git a/drivers/md/dm-kcopyd.c b/drivers/md/dm-kcopyd.c
index 1bbe4a34ef4c..ad861a3d648e 100644
--- a/drivers/md/dm-kcopyd.c
+++ b/drivers/md/dm-kcopyd.c
@@ -584,7 +584,7 @@ static int run_io_job(struct kcopyd_job *job)
static int run_pages_job(struct kcopyd_job *job)
{
int r;
- unsigned nr_pages = dm_div_up(job->dests[0].count, PAGE_SIZE >> 9);
+ unsigned int nr_pages = dm_div_up(job->dests[0].count, PAGE_SECTORS);
r = kcopyd_get_pages(job->kc, nr_pages, &job->pages);
if (!r) {
diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c
index b952bd45bd6a..12ccf1c81661 100644
--- a/drivers/md/md-bitmap.c
+++ b/drivers/md/md-bitmap.c
@@ -161,7 +161,7 @@ static int read_sb_page(struct mddev *mddev, loff_t offset,
|| test_bit(Bitmap_sync, &rdev->flags))
continue;
- target = offset + index * (PAGE_SIZE/512);
+ target = offset + index * PAGE_SECTORS;
if (sync_page_io(rdev, target,
roundup(size, bdev_logical_block_size(rdev->bdev)),
@@ -237,17 +237,17 @@ static int write_sb_page(struct bitmap *bitmap, struct page *page, int wait)
if (mddev->external) {
/* Bitmap could be anywhere. */
if (rdev->sb_start + offset + (page->index
- * (PAGE_SIZE/512))
+ * PAGE_SECTORS)
> rdev->data_offset
&&
rdev->sb_start + offset
< (rdev->data_offset + mddev->dev_sectors
- + (PAGE_SIZE/512)))
+ + PAGE_SECTORS))
goto bad_alignment;
} else if (offset < 0) {
/* DATA BITMAP METADATA */
if (offset
- + (long)(page->index * (PAGE_SIZE/512))
+ + (long)(page->index * PAGE_SECTORS)
+ size/512 > 0)
/* bitmap runs in to metadata */
goto bad_alignment;
@@ -259,7 +259,7 @@ static int write_sb_page(struct bitmap *bitmap, struct page *page, int wait)
/* METADATA BITMAP DATA */
if (rdev->sb_start
+ offset
- + page->index*(PAGE_SIZE/512) + size/512
+ + page->index*PAGE_SECTORS + size/512
> rdev->data_offset)
/* bitmap runs in to data */
goto bad_alignment;
@@ -268,7 +268,7 @@ static int write_sb_page(struct bitmap *bitmap, struct page *page, int wait)
}
md_super_write(mddev, rdev,
rdev->sb_start + offset
- + page->index * (PAGE_SIZE/512),
+ + page->index * PAGE_SECTORS,
size,
page);
}
@@ -1548,14 +1548,14 @@ int md_bitmap_start_sync(struct bitmap *bitmap, sector_t offset, sector_t *block
* pages, otherwise resync (which is very PAGE_SIZE based) will
* get confused.
* So call __bitmap_start_sync repeatedly (if needed) until
- * At least PAGE_SIZE>>9 blocks are covered.
+ * At least PAGE_SECTORS blocks are covered.
* Return the 'or' of the result.
*/
int rv = 0;
sector_t blocks1;
*blocks = 0;
- while (*blocks < (PAGE_SIZE>>9)) {
+ while (*blocks < PAGE_SECTORS) {
rv |= __bitmap_start_sync(bitmap, offset,
&blocks1, degraded);
offset += blocks1;
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 271e8a587354..a7572b17cf2e 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -1736,7 +1736,7 @@ static int super_1_load(struct md_rdev *rdev, struct md_rdev *refdev, int minor_
__le64 *bbp;
int i;
int sectors = le16_to_cpu(sb->bblog_size);
- if (sectors > (PAGE_SIZE / 512))
+ if (sectors > PAGE_SECTORS)
return -EINVAL;
offset = le32_to_cpu(sb->bblog_offset);
if (offset == 0)
@@ -2223,7 +2223,7 @@ super_1_allow_new_offset(struct md_rdev *rdev,
bitmap = rdev->mddev->bitmap;
if (bitmap && !rdev->mddev->bitmap_info.file &&
rdev->sb_start + rdev->mddev->bitmap_info.offset +
- bitmap->storage.file_pages * (PAGE_SIZE>>9) > new_offset)
+ bitmap->storage.file_pages * PAGE_SECTORS > new_offset)
return 0;
if (rdev->badblocks.sector + rdev->badblocks.size > new_offset)
return 0;
@@ -8734,7 +8734,7 @@ void md_do_sync(struct md_thread *thread)
/*
* Tune reconstruction:
*/
- window = 32 * (PAGE_SIZE / 512);
+ window = 32 * PAGE_SECTORS;
pr_debug("md: using %dk window, over a total of %lluk.\n",
window/2, (unsigned long long)max_sectors/2);
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 44ffe1b6d77a..717c6e397cad 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -2021,8 +2021,8 @@ static int fix_sync_read_error(struct r1bio *r1_bio)
int success = 0;
int start;
- if (s > (PAGE_SIZE>>9))
- s = PAGE_SIZE >> 9;
+ if (s > PAGE_SECTORS)
+ s = PAGE_SECTORS;
do {
if (r1_bio->bios[d]->bi_end_io == end_sync_read) {
/* No rcu protection needed here devices
@@ -2129,7 +2129,7 @@ static void process_checks(struct r1bio *r1_bio)
int vcnt;
/* Fix variable parts of all bios */
- vcnt = sectors_to_npage(r1_bio->sectors + PAGE_SIZE / 512 - 1);
+ vcnt = sectors_to_npage(r1_bio->sectors + PAGE_SECTORS - 1);
for (i = 0; i < conf->raid_disks * 2; i++) {
blk_status_t status;
struct bio *b = r1_bio->bios[i];
@@ -2264,8 +2264,8 @@ static void fix_read_error(struct r1conf *conf, int read_disk,
int start;
struct md_rdev *rdev;
- if (s > (PAGE_SIZE>>9))
- s = PAGE_SIZE >> 9;
+ if (s > PAGE_SECTORS)
+ s = PAGE_SECTORS;
do {
sector_t first_bad;
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index ac4273f804e8..21bc6e33c093 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -2029,7 +2029,7 @@ static void sync_request_write(struct mddev *mddev, struct r10bio *r10_bio)
fbio->bi_iter.bi_idx = 0;
fpages = get_resync_pages(fbio)->pages;
- vcnt = sectors_to_npage(r10_bio->sectors + (PAGE_SIZE >> 9) - 1);
+ vcnt = sectors_to_npage(r10_bio->sectors + PAGE_SECTORS - 1);
/* now find blocks with errors */
for (i=0 ; i < conf->copies ; i++) {
int j, d;
@@ -2163,8 +2163,8 @@ static void fix_recovery_read_error(struct r10bio *r10_bio)
sector_t addr;
int ok;
- if (s > (PAGE_SIZE>>9))
- s = PAGE_SIZE >> 9;
+ if (s > PAGE_SECTORS)
+ s = PAGE_SECTORS;
rdev = conf->mirrors[dr].rdev;
addr = r10_bio->devs[0].addr + sect,
@@ -2367,8 +2367,8 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10
int success = 0;
int start;
- if (s > (PAGE_SIZE>>9))
- s = PAGE_SIZE >> 9;
+ if (s > PAGE_SECTORS)
+ s = PAGE_SECTORS;
rcu_read_lock();
do {
@@ -3597,7 +3597,7 @@ static int setup_geo(struct geom *geo, struct mddev *mddev, enum geo_type new)
}
if (layout >> 19)
return -1;
- if (chunk < (PAGE_SIZE >> 9) ||
+ if (chunk < PAGE_SECTORS ||
!is_power_of_2(chunk))
return -2;
nc = layout & 255;
@@ -4632,8 +4632,8 @@ static sector_t reshape_request(struct mddev *mddev, sector_t sector_nr,
nr_sectors = 0;
pages = get_resync_pages(r10_bio->devs[0].bio)->pages;
- for (s = 0 ; s < max_sectors; s += PAGE_SIZE >> 9) {
- struct page *page = pages[s / (PAGE_SIZE >> 9)];
+ for (s = 0 ; s < max_sectors; s += PAGE_SECTORS) {
+ struct page *page = pages[s / PAGE_SECTORS];
int len = (max_sectors - s) << 9;
if (len > PAGE_SIZE)
len = PAGE_SIZE;
@@ -4789,8 +4789,8 @@ static int handle_reshape_read_error(struct mddev *mddev,
int success = 0;
int first_slot = slot;
- if (s > (PAGE_SIZE >> 9))
- s = PAGE_SIZE >> 9;
+ if (s > PAGE_SECTORS)
+ s = PAGE_SECTORS;
rcu_read_lock();
while (!success) {
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index ba00e9877f02..5b316538b9ea 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -8197,7 +8197,7 @@ static int raid5_check_reshape(struct mddev *mddev)
if (new_chunk > 0) {
if (!is_power_of_2(new_chunk))
return -EINVAL;
- if (new_chunk < (PAGE_SIZE>>9))
+ if (new_chunk < PAGE_SECTORS)
return -EINVAL;
if (mddev->array_sectors & (new_chunk-1))
/* not factor of array size */
@@ -8231,7 +8231,7 @@ static int raid6_check_reshape(struct mddev *mddev)
if (new_chunk > 0) {
if (!is_power_of_2(new_chunk))
return -EINVAL;
- if (new_chunk < (PAGE_SIZE >> 9))
+ if (new_chunk < PAGE_SECTORS)
return -EINVAL;
if (mddev->array_sectors & (new_chunk-1))
/* not factor of array size */
--
2.26.0.106.g9fadedd
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