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btrfs: use variable for end offset in extent_writepage_io()

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Instead of repeating the expression "start + len" multiple times, store it
in a variable and use it where needed.

Reviewed-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Anand Jain <asj@kernel.org>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Filipe Manana 2025-10-10 17:04:03 +01:00 committed by David Sterba
parent 18de34daa7
commit 46a2390859
1 changed files with 5 additions and 5 deletions
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10
fs/btrfs/extent_io.c
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@ -1690,6 +1690,7 @@ static noinline_for_stack int extent_writepage_io(struct btrfs_inode *inode,
unsigned long range_bitmap = 0;
bool submitted_io = false;
int found_error = 0;
const u64 end = start + len;
const u64 folio_start = folio_pos(folio);
const u64 folio_end = folio_start + folio_size(folio);
const unsigned int blocks_per_folio = btrfs_blocks_per_folio(fs_info, folio);
@ -1697,7 +1698,7 @@ static noinline_for_stack int extent_writepage_io(struct btrfs_inode *inode,
int bit;
int ret = 0;
ASSERT(start >= folio_start && start + len <= folio_end);
ASSERT(start >= folio_start && end <= folio_end);
ret = btrfs_writepage_cow_fixup(folio);
if (ret == -EAGAIN) {
@ -1713,7 +1714,7 @@ static noinline_for_stack int extent_writepage_io(struct btrfs_inode *inode,
return ret;
}
for (cur = start; cur < start + len; cur += fs_info->sectorsize)
for (cur = start; cur < end; cur += fs_info->sectorsize)
set_bit((cur - folio_start) >> fs_info->sectorsize_bits, &range_bitmap);
bitmap_and(&bio_ctrl->submit_bitmap, &bio_ctrl->submit_bitmap, &range_bitmap,
blocks_per_folio);
@ -1742,7 +1743,7 @@ static noinline_for_stack int extent_writepage_io(struct btrfs_inode *inode,
btrfs_put_ordered_extent(ordered);
btrfs_mark_ordered_io_finished(inode, folio, cur,
start + len - cur, true);
end - cur, true);
/*
* This range is beyond i_size, thus we don't need to
* bother writing back.
@ -1751,8 +1752,7 @@ static noinline_for_stack int extent_writepage_io(struct btrfs_inode *inode,
* writeback the sectors with subpage dirty bits,
* causing writeback without ordered extent.
*/
btrfs_folio_clear_dirty(fs_info, folio, cur,
start + len - cur);
btrfs_folio_clear_dirty(fs_info, folio, cur, end - cur);
break;
}
ret = submit_one_sector(inode, folio, cur, bio_ctrl, i_size);