From: Qu Wenruo <wqu@suse.com>
To: linux-btrfs@vger.kernel.org
Subject: [PATCH 02/27] btrfs: remove unnecessary parameter @delalloc_start for writepage_delalloc()
Date: Tue, 13 Jul 2021 14:14:51 +0800 [thread overview]
Message-ID: <20210713061516.163318-3-wqu@suse.com> (raw)
In-Reply-To: <20210713061516.163318-1-wqu@suse.com>
In function __extent_writepage() we always pass page start to
@delalloc_start for writepage_delalloc().
Thus we don't really need @delalloc_start parameter as we can extract it
from @page.
So this patch will remove @delalloc_start parameter and make
__extent_writepage() to declare @page_start and @page_end as const.
Signed-off-by: Qu Wenruo <wqu@suse.com>
---
fs/btrfs/extent_io.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 248f22267665..d11facbd64c0 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -3774,10 +3774,11 @@ static void update_nr_written(struct writeback_control *wbc,
*/
static noinline_for_stack int writepage_delalloc(struct btrfs_inode *inode,
struct page *page, struct writeback_control *wbc,
- u64 delalloc_start, unsigned long *nr_written)
+ unsigned long *nr_written)
{
- u64 page_end = delalloc_start + PAGE_SIZE - 1;
+ u64 page_end = page_offset(page) + PAGE_SIZE - 1;
bool found;
+ u64 delalloc_start = page_offset(page);
u64 delalloc_to_write = 0;
u64 delalloc_end = 0;
int ret;
@@ -4058,8 +4059,8 @@ static int __extent_writepage(struct page *page, struct writeback_control *wbc,
struct extent_page_data *epd)
{
struct inode *inode = page->mapping->host;
- u64 start = page_offset(page);
- u64 page_end = start + PAGE_SIZE - 1;
+ const u64 page_start = page_offset(page);
+ const u64 page_end = page_start + PAGE_SIZE - 1;
int ret;
int nr = 0;
size_t pg_offset;
@@ -4093,7 +4094,7 @@ static int __extent_writepage(struct page *page, struct writeback_control *wbc,
}
if (!epd->extent_locked) {
- ret = writepage_delalloc(BTRFS_I(inode), page, wbc, start,
+ ret = writepage_delalloc(BTRFS_I(inode), page, wbc,
&nr_written);
if (ret == 1)
return 0;
@@ -4114,7 +4115,7 @@ static int __extent_writepage(struct page *page, struct writeback_control *wbc,
}
if (PageError(page)) {
ret = ret < 0 ? ret : -EIO;
- end_extent_writepage(page, ret, start, page_end);
+ end_extent_writepage(page, ret, page_start, page_end);
}
unlock_page(page);
ASSERT(ret <= 0);
--
2.32.0
next prev parent reply other threads:[~2021-07-13 6:15 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-13 6:14 [PATCH 00/27] btrfs: limited subpage compressed write support Qu Wenruo
2021-07-13 6:14 ` [PATCH 01/27] btrfs: remove unused parameter @nr_pages in add_ra_bio_pages() Qu Wenruo
2021-07-13 6:14 ` Qu Wenruo [this message]
2021-07-13 6:14 ` [PATCH 03/27] btrfs: use async_chunk::async_cow to replace the confusing pending pointer Qu Wenruo
2021-07-13 7:36 ` Nikolay Borisov
2021-07-13 6:14 ` [PATCH 04/27] btrfs: don't pass compressed pages to btrfs_writepage_endio_finish_ordered() Qu Wenruo
2021-07-13 6:14 ` [PATCH 05/27] btrfs: make add_ra_bio_pages() to be subpage compatible Qu Wenruo
2021-07-13 6:14 ` [PATCH 06/27] btrfs: introduce compressed_bio::pending_sectors to trace compressed bio more elegantly Qu Wenruo
2021-07-13 6:14 ` [PATCH 07/27] btrfs: add subpage checked_bitmap to make PageChecked flag to be subpage compatible Qu Wenruo
2021-07-16 7:54 ` Qu Wenruo
2021-07-13 6:14 ` [PATCH 08/27] btrfs: handle errors properly inside btrfs_submit_compressed_read() Qu Wenruo
2021-07-13 6:14 ` [PATCH 09/27] btrfs: handle errors properly inside btrfs_submit_compressed_write() Qu Wenruo
2021-07-13 6:14 ` [PATCH 10/27] btrfs: introduce submit_compressed_bio() for compression Qu Wenruo
2021-07-13 6:15 ` [PATCH 11/27] btrfs: introduce alloc_compressed_bio() " Qu Wenruo
2021-07-13 6:15 ` [PATCH 12/27] btrfs: make btrfs_submit_compressed_read() to determine stripe boundary at bio allocation time Qu Wenruo
2021-07-13 6:15 ` [PATCH 13/27] btrfs: make btrfs_submit_compressed_write() " Qu Wenruo
2021-07-13 6:15 ` [PATCH 14/27] btrfs: remove unused function btrfs_bio_fits_in_stripe() Qu Wenruo
2021-07-13 6:15 ` [PATCH 15/27] btrfs: refactor submit_compressed_extents() Qu Wenruo
2021-07-13 6:15 ` [PATCH 16/27] btrfs: cleanup for extent_write_locked_range() Qu Wenruo
2021-07-13 6:15 ` [PATCH 17/27] btrfs: make compress_file_range() to be subpage compatible Qu Wenruo
2021-07-13 6:15 ` [PATCH 18/27] btrfs: make btrfs_submit_compressed_write() " Qu Wenruo
2021-07-13 6:15 ` [PATCH 19/27] btrfs: make end_compressed_bio_writeback() to be subpage compatble Qu Wenruo
2021-07-13 6:15 ` [PATCH 20/27] btrfs: make extent_write_locked_range() to be subpage compatible Qu Wenruo
2021-07-13 6:15 ` [PATCH 21/27] btrfs: extract uncompressed async extent submission code into a new helper Qu Wenruo
2021-07-13 6:15 ` [PATCH 22/27] btrfs: rework lzo_compress_pages() to make it subpage compatible Qu Wenruo
2021-07-13 6:15 ` [PATCH 23/27] btrfs: teach __extent_writepage() to handle locked page differently Qu Wenruo
2021-07-13 6:15 ` [PATCH 24/27] btrfs: allow page to be unlocked by btrfs_page_end_writer_lock() even if it's locked by plain page_lock() Qu Wenruo
2021-07-13 6:15 ` [PATCH 25/27] btrfs: allow subpage to compress a range which only covers one page Qu Wenruo
2021-07-13 6:15 ` [PATCH 26/27] btrfs: don't run delalloc range which is beyond the locked_page to prevent deadlock for subpage compression Qu Wenruo
2021-07-13 6:15 ` [PATCH 27/27] btrfs: only allow subpage compression if the range is fully page aligned Qu Wenruo
2021-07-16 9:11 ` [PATCH 00/27] btrfs: limited subpage compressed write support Qu Wenruo
2021-07-20 5:00 ` Qu Wenruo
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