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btrfs: convert writepage_delalloc() to take a folio

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We already use a folio heavily in this function, pass the folio in
directly and use it everywhere, only passing the page down to functions
that do not take a folio yet.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik 2024-07-24 16:03:04 -04:00 committed by David Sterba
parent a79228011c
commit dc6c745447
1 changed files with 20 additions and 18 deletions
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38
fs/btrfs/extent_io.c
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@ -1188,13 +1188,13 @@ int btrfs_read_folio(struct file *file, struct folio *folio)
* This returns < 0 if there were errors (page still locked)
*/
static noinline_for_stack int writepage_delalloc(struct btrfs_inode *inode,
struct page *page, struct writeback_control *wbc)
struct folio *folio,
struct writeback_control *wbc)
{
struct btrfs_fs_info *fs_info = inode_to_fs_info(&inode->vfs_inode);
struct folio *folio = page_folio(page);
const bool is_subpage = btrfs_is_subpage(fs_info, page->mapping);
const u64 page_start = page_offset(page);
const u64 page_end = page_start + PAGE_SIZE - 1;
const bool is_subpage = btrfs_is_subpage(fs_info, folio->mapping);
const u64 page_start = folio_pos(folio);
const u64 page_end = page_start + folio_size(folio) - 1;
/*
* Save the last found delalloc end. As the delalloc end can go beyond
* page boundary, thus we cannot rely on subpage bitmap to locate the
@ -1206,10 +1206,10 @@ static noinline_for_stack int writepage_delalloc(struct btrfs_inode *inode,
u64 delalloc_to_write = 0;
int ret = 0;
/* Lock all (subpage) delalloc ranges inside the page first. */
/* Lock all (subpage) delalloc ranges inside the folio first. */
while (delalloc_start < page_end) {
delalloc_end = page_end;
if (!find_lock_delalloc_range(&inode->vfs_inode, page,
if (!find_lock_delalloc_range(&inode->vfs_inode, &folio->page,
&delalloc_start, &delalloc_end)) {
delalloc_start = delalloc_end + 1;
continue;
@ -1234,7 +1234,7 @@ static noinline_for_stack int writepage_delalloc(struct btrfs_inode *inode,
if (!is_subpage) {
/*
* For non-subpage case, the found delalloc range must
* cover this page and there must be only one locked
* cover this folio and there must be only one locked
* delalloc range.
*/
found_start = page_start;
@ -1248,7 +1248,7 @@ static noinline_for_stack int writepage_delalloc(struct btrfs_inode *inode,
break;
/*
* The subpage range covers the last sector, the delalloc range may
* end beyond the page boundary, use the saved delalloc_end
* end beyond the folio boundary, use the saved delalloc_end
* instead.
*/
if (found_start + found_len >= page_end)
@ -1256,7 +1256,8 @@ static noinline_for_stack int writepage_delalloc(struct btrfs_inode *inode,
if (ret >= 0) {
/* No errors hit so far, run the current delalloc range. */
ret = btrfs_run_delalloc_range(inode, page, found_start,
ret = btrfs_run_delalloc_range(inode, &folio->page,
found_start,
found_start + found_len - 1,
wbc);
} else {
@ -1266,15 +1267,16 @@ static noinline_for_stack int writepage_delalloc(struct btrfs_inode *inode,
*/
unlock_extent(&inode->io_tree, found_start,
found_start + found_len - 1, NULL);
__unlock_for_delalloc(&inode->vfs_inode, page, found_start,
__unlock_for_delalloc(&inode->vfs_inode, &folio->page,
found_start,
found_start + found_len - 1);
}
/*
* We can hit btrfs_run_delalloc_range() with >0 return value.
*
* This happens when either the IO is already done and page
* unlocked (inline) or the IO submission and page unlock would
* This happens when either the IO is already done and folio
* unlocked (inline) or the IO submission and folio unlock would
* be handled as async (compression).
*
* Inline is only possible for regular sectorsize for now.
@ -1282,14 +1284,14 @@ static noinline_for_stack int writepage_delalloc(struct btrfs_inode *inode,
* Compression is possible for both subpage and regular cases,
* but even for subpage compression only happens for page aligned
* range, thus the found delalloc range must go beyond current
* page.
* folio.
*/
if (ret > 0)
ASSERT(!is_subpage || found_start + found_len >= page_end);
/*
* Above btrfs_run_delalloc_range() may have unlocked the page,
* thus for the last range, we cannot touch the page anymore.
* Above btrfs_run_delalloc_range() may have unlocked the folio,
* thus for the last range, we cannot touch the folio anymore.
*/
if (found_start + found_len >= last_delalloc_end + 1)
break;
@ -1312,7 +1314,7 @@ out:
/*
* If btrfs_run_dealloc_range() already started I/O and unlocked
* the pages, we just need to account for them here.
* the folios, we just need to account for them here.
*/
if (ret == 1) {
wbc->nr_to_write -= delalloc_to_write;
@ -1548,7 +1550,7 @@ static int __extent_writepage(struct folio *folio, struct btrfs_bio_ctrl *bio_ct
if (ret < 0)
goto done;
ret = writepage_delalloc(BTRFS_I(inode), &folio->page, bio_ctrl->wbc);
ret = writepage_delalloc(BTRFS_I(inode), folio, bio_ctrl->wbc);
if (ret == 1)
return 0;
if (ret)