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authorLinus Torvalds <torvalds@linux-foundation.org>2022-05-25 04:55:07 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2022-05-25 04:55:07 +0200
commitfdaf9a5840acaab18694a19e0eb0aa51162eeeed (patch)
treea027770138bccf9114cc83bafaa57accc13c91a6 /fs/btrfs
parentMerge tag 'iomap-5.19-merge-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux (diff)
parentnilfs2: Fix some kernel-doc comments (diff)
downloadlinux-fdaf9a5840acaab18694a19e0eb0aa51162eeeed.tar.xz
linux-fdaf9a5840acaab18694a19e0eb0aa51162eeeed.zip
Merge tag 'folio-5.19' of git://git.infradead.org/users/willy/pagecache
Pull page cache updates from Matthew Wilcox: - Appoint myself page cache maintainer - Fix how scsicam uses the page cache - Use the memalloc_nofs_save() API to replace AOP_FLAG_NOFS - Remove the AOP flags entirely - Remove pagecache_write_begin() and pagecache_write_end() - Documentation updates - Convert several address_space operations to use folios: - is_dirty_writeback - readpage becomes read_folio - releasepage becomes release_folio - freepage becomes free_folio - Change filler_t to require a struct file pointer be the first argument like ->read_folio * tag 'folio-5.19' of git://git.infradead.org/users/willy/pagecache: (107 commits) nilfs2: Fix some kernel-doc comments Appoint myself page cache maintainer fs: Remove aops->freepage secretmem: Convert to free_folio nfs: Convert to free_folio orangefs: Convert to free_folio fs: Add free_folio address space operation fs: Convert drop_buffers() to use a folio fs: Change try_to_free_buffers() to take a folio jbd2: Convert release_buffer_page() to use a folio jbd2: Convert jbd2_journal_try_to_free_buffers to take a folio reiserfs: Convert release_buffer_page() to use a folio fs: Remove last vestiges of releasepage ubifs: Convert to release_folio reiserfs: Convert to release_folio orangefs: Convert to release_folio ocfs2: Convert to release_folio nilfs2: Remove comment about releasepage nfs: Convert to release_folio jfs: Convert to release_folio ...
Diffstat (limited to 'fs/btrfs')
-rw-r--r--fs/btrfs/disk-io.c12
-rw-r--r--fs/btrfs/extent_io.c17
-rw-r--r--fs/btrfs/extent_io.h2
-rw-r--r--fs/btrfs/file.c9
-rw-r--r--fs/btrfs/free-space-cache.c2
-rw-r--r--fs/btrfs/inode.c28
-rw-r--r--fs/btrfs/ioctl.c2
-rw-r--r--fs/btrfs/relocation.c13
-rw-r--r--fs/btrfs/send.c6
9 files changed, 47 insertions, 44 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 14f8a90df321..89e94ea2fef5 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -996,12 +996,12 @@ static int btree_writepages(struct address_space *mapping,
return btree_write_cache_pages(mapping, wbc);
}
-static int btree_releasepage(struct page *page, gfp_t gfp_flags)
+static bool btree_release_folio(struct folio *folio, gfp_t gfp_flags)
{
- if (PageWriteback(page) || PageDirty(page))
- return 0;
+ if (folio_test_writeback(folio) || folio_test_dirty(folio))
+ return false;
- return try_release_extent_buffer(page);
+ return try_release_extent_buffer(&folio->page);
}
static void btree_invalidate_folio(struct folio *folio, size_t offset,
@@ -1010,7 +1010,7 @@ static void btree_invalidate_folio(struct folio *folio, size_t offset,
struct extent_io_tree *tree;
tree = &BTRFS_I(folio->mapping->host)->io_tree;
extent_invalidate_folio(tree, folio, offset);
- btree_releasepage(&folio->page, GFP_NOFS);
+ btree_release_folio(folio, GFP_NOFS);
if (folio_get_private(folio)) {
btrfs_warn(BTRFS_I(folio->mapping->host)->root->fs_info,
"folio private not zero on folio %llu",
@@ -1071,7 +1071,7 @@ static bool btree_dirty_folio(struct address_space *mapping,
static const struct address_space_operations btree_aops = {
.writepages = btree_writepages,
- .releasepage = btree_releasepage,
+ .release_folio = btree_release_folio,
.invalidate_folio = btree_invalidate_folio,
#ifdef CONFIG_MIGRATION
.migratepage = btree_migratepage,
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 588c7c606a2c..8f6b544ae616 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -3799,8 +3799,9 @@ out:
return ret;
}
-int btrfs_readpage(struct file *file, struct page *page)
+int btrfs_read_folio(struct file *file, struct folio *folio)
{
+ struct page *page = &folio->page;
struct btrfs_inode *inode = BTRFS_I(page->mapping->host);
u64 start = page_offset(page);
u64 end = start + PAGE_SIZE - 1;
@@ -5306,7 +5307,7 @@ int extent_invalidate_folio(struct extent_io_tree *tree,
}
/*
- * a helper for releasepage, this tests for areas of the page that
+ * a helper for release_folio, this tests for areas of the page that
* are locked or under IO and drops the related state bits if it is safe
* to drop the page.
*/
@@ -5342,7 +5343,7 @@ static int try_release_extent_state(struct extent_io_tree *tree,
}
/*
- * a helper for releasepage. As long as there are no locked extents
+ * a helper for release_folio. As long as there are no locked extents
* in the range corresponding to the page, both state records and extent
* map records are removed
*/
@@ -6042,10 +6043,10 @@ static void check_buffer_tree_ref(struct extent_buffer *eb)
*
* It is only cleared in two cases: freeing the last non-tree
* reference to the extent_buffer when its STALE bit is set or
- * calling releasepage when the tree reference is the only reference.
+ * calling release_folio when the tree reference is the only reference.
*
* In both cases, care is taken to ensure that the extent_buffer's
- * pages are not under io. However, releasepage can be concurrently
+ * pages are not under io. However, release_folio can be concurrently
* called with creating new references, which is prone to race
* conditions between the calls to check_buffer_tree_ref in those
* codepaths and clearing TREE_REF in try_release_extent_buffer.
@@ -6310,7 +6311,7 @@ struct extent_buffer *alloc_extent_buffer(struct btrfs_fs_info *fs_info,
/*
* We can't unlock the pages just yet since the extent buffer
* hasn't been properly inserted in the radix tree, this
- * opens a race with btree_releasepage which can free a page
+ * opens a race with btree_release_folio which can free a page
* while we are still filling in all pages for the buffer and
* we could crash.
*/
@@ -6339,7 +6340,7 @@ struct extent_buffer *alloc_extent_buffer(struct btrfs_fs_info *fs_info,
/*
* Now it's safe to unlock the pages because any calls to
- * btree_releasepage will correctly detect that a page belongs to a
+ * btree_release_folio will correctly detect that a page belongs to a
* live buffer and won't free them prematurely.
*/
for (i = 0; i < num_pages; i++)
@@ -6721,7 +6722,7 @@ int read_extent_buffer_pages(struct extent_buffer *eb, int wait, int mirror_num)
eb->read_mirror = 0;
atomic_set(&eb->io_pages, num_reads);
/*
- * It is possible for releasepage to clear the TREE_REF bit before we
+ * It is possible for release_folio to clear the TREE_REF bit before we
* set io_pages. See check_buffer_tree_ref for a more detailed comment.
*/
check_buffer_tree_ref(eb);
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index 956fa434df43..23d4103c8831 100644
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -149,7 +149,7 @@ typedef struct extent_map *(get_extent_t)(struct btrfs_inode *inode,
int try_release_extent_mapping(struct page *page, gfp_t mask);
int try_release_extent_buffer(struct page *page);
-int btrfs_readpage(struct file *file, struct page *page);
+int btrfs_read_folio(struct file *file, struct folio *folio);
int extent_write_full_page(struct page *page, struct writeback_control *wbc);
int extent_write_locked_range(struct inode *inode, u64 start, u64 end);
int extent_writepages(struct address_space *mapping,
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 46c2baa8fdf5..1fd827b99c1b 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -1307,11 +1307,12 @@ static int prepare_uptodate_page(struct inode *inode,
struct page *page, u64 pos,
bool force_uptodate)
{
+ struct folio *folio = page_folio(page);
int ret = 0;
if (((pos & (PAGE_SIZE - 1)) || force_uptodate) &&
!PageUptodate(page)) {
- ret = btrfs_readpage(NULL, page);
+ ret = btrfs_read_folio(NULL, folio);
if (ret)
return ret;
lock_page(page);
@@ -1321,8 +1322,8 @@ static int prepare_uptodate_page(struct inode *inode,
}
/*
- * Since btrfs_readpage() will unlock the page before it
- * returns, there is a window where btrfs_releasepage() can be
+ * Since btrfs_read_folio() will unlock the folio before it
+ * returns, there is a window where btrfs_release_folio() can be
* called to release the page. Here we check both inode
* mapping and PagePrivate() to make sure the page was not
* released.
@@ -2364,7 +2365,7 @@ static int btrfs_file_mmap(struct file *filp, struct vm_area_struct *vma)
{
struct address_space *mapping = filp->f_mapping;
- if (!mapping->a_ops->readpage)
+ if (!mapping->a_ops->read_folio)
return -ENOEXEC;
file_accessed(filp);
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index f7adee6fa05e..b1ae3ba2ca2c 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -465,7 +465,7 @@ static int io_ctl_prepare_pages(struct btrfs_io_ctl *io_ctl, bool uptodate)
io_ctl->pages[i] = page;
if (uptodate && !PageUptodate(page)) {
- btrfs_readpage(NULL, page);
+ btrfs_read_folio(NULL, page_folio(page));
lock_page(page);
if (page->mapping != inode->i_mapping) {
btrfs_err(BTRFS_I(inode)->root->fs_info,
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index da13bd0d10f1..81737eff92f3 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -4809,7 +4809,7 @@ again:
goto out_unlock;
if (!PageUptodate(page)) {
- ret = btrfs_readpage(NULL, page);
+ ret = btrfs_read_folio(NULL, page_folio(page));
lock_page(page);
if (page->mapping != mapping) {
unlock_page(page);
@@ -8204,7 +8204,7 @@ static void btrfs_readahead(struct readahead_control *rac)
}
/*
- * For releasepage() and invalidate_folio() we have a race window where
+ * For release_folio() and invalidate_folio() we have a race window where
* folio_end_writeback() is called but the subpage spinlock is not yet released.
* If we continue to release/invalidate the page, we could cause use-after-free
* for subpage spinlock. So this function is to spin and wait for subpage
@@ -8236,22 +8236,22 @@ static void wait_subpage_spinlock(struct page *page)
spin_unlock_irq(&subpage->lock);
}
-static int __btrfs_releasepage(struct page *page, gfp_t gfp_flags)
+static bool __btrfs_release_folio(struct folio *folio, gfp_t gfp_flags)
{
- int ret = try_release_extent_mapping(page, gfp_flags);
+ int ret = try_release_extent_mapping(&folio->page, gfp_flags);
if (ret == 1) {
- wait_subpage_spinlock(page);
- clear_page_extent_mapped(page);
+ wait_subpage_spinlock(&folio->page);
+ clear_page_extent_mapped(&folio->page);
}
return ret;
}
-static int btrfs_releasepage(struct page *page, gfp_t gfp_flags)
+static bool btrfs_release_folio(struct folio *folio, gfp_t gfp_flags)
{
- if (PageWriteback(page) || PageDirty(page))
- return 0;
- return __btrfs_releasepage(page, gfp_flags);
+ if (folio_test_writeback(folio) || folio_test_dirty(folio))
+ return false;
+ return __btrfs_release_folio(folio, gfp_flags);
}
#ifdef CONFIG_MIGRATION
@@ -8322,7 +8322,7 @@ static void btrfs_invalidate_folio(struct folio *folio, size_t offset,
* still safe to wait for ordered extent to finish.
*/
if (!(offset == 0 && length == folio_size(folio))) {
- btrfs_releasepage(&folio->page, GFP_NOFS);
+ btrfs_release_folio(folio, GFP_NOFS);
return;
}
@@ -8446,7 +8446,7 @@ next:
ASSERT(!folio_test_ordered(folio));
btrfs_page_clear_checked(fs_info, &folio->page, folio_pos(folio), folio_size(folio));
if (!inode_evicting)
- __btrfs_releasepage(&folio->page, GFP_NOFS);
+ __btrfs_release_folio(folio, GFP_NOFS);
clear_page_extent_mapped(&folio->page);
}
@@ -11415,13 +11415,13 @@ static const struct file_operations btrfs_dir_file_operations = {
* For now we're avoiding this by dropping bmap.
*/
static const struct address_space_operations btrfs_aops = {
- .readpage = btrfs_readpage,
+ .read_folio = btrfs_read_folio,
.writepage = btrfs_writepage,
.writepages = btrfs_writepages,
.readahead = btrfs_readahead,
.direct_IO = noop_direct_IO,
.invalidate_folio = btrfs_invalidate_folio,
- .releasepage = btrfs_releasepage,
+ .release_folio = btrfs_release_folio,
#ifdef CONFIG_MIGRATION
.migratepage = btrfs_migratepage,
#endif
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 43b6f23bbd89..0f79af919bc4 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -1358,7 +1358,7 @@ again:
* make it uptodate.
*/
if (!PageUptodate(page)) {
- btrfs_readpage(NULL, page);
+ btrfs_read_folio(NULL, page_folio(page));
lock_page(page);
if (page->mapping != mapping || !PagePrivate(page)) {
unlock_page(page);
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index edddd93d2118..a6dc827e75af 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -1101,7 +1101,7 @@ int replace_file_extents(struct btrfs_trans_handle *trans,
continue;
/*
- * if we are modifying block in fs tree, wait for readpage
+ * if we are modifying block in fs tree, wait for read_folio
* to complete and drop the extent cache
*/
if (root->root_key.objectid != BTRFS_TREE_RELOC_OBJECTID) {
@@ -1563,7 +1563,7 @@ static int invalidate_extent_cache(struct btrfs_root *root,
end = (u64)-1;
}
- /* the lock_extent waits for readpage to complete */
+ /* the lock_extent waits for read_folio to complete */
lock_extent(&BTRFS_I(inode)->io_tree, start, end);
btrfs_drop_extent_cache(BTRFS_I(inode), start, end, 1);
unlock_extent(&BTRFS_I(inode)->io_tree, start, end);
@@ -2818,7 +2818,7 @@ static noinline_for_stack int prealloc_file_extent_cluster(
* Subpage can't handle page with DIRTY but without UPTODATE
* bit as it can lead to the following deadlock:
*
- * btrfs_readpage()
+ * btrfs_read_folio()
* | Page already *locked*
* |- btrfs_lock_and_flush_ordered_range()
* |- btrfs_start_ordered_extent()
@@ -2967,11 +2967,12 @@ static int relocate_one_page(struct inode *inode, struct file_ra_state *ra,
goto release_page;
if (PageReadahead(page))
- page_cache_async_readahead(inode->i_mapping, ra, NULL, page,
- page_index, last_index + 1 - page_index);
+ page_cache_async_readahead(inode->i_mapping, ra, NULL,
+ page_folio(page), page_index,
+ last_index + 1 - page_index);
if (!PageUptodate(page)) {
- btrfs_readpage(NULL, page);
+ btrfs_read_folio(NULL, page_folio(page));
lock_page(page);
if (!PageUptodate(page)) {
ret = -EIO;
diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index 5a05beabf0c3..fa56890ff81f 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -4907,11 +4907,11 @@ static int put_file_data(struct send_ctx *sctx, u64 offset, u32 len)
if (PageReadahead(page))
page_cache_async_readahead(sctx->cur_inode->i_mapping,
- &sctx->ra, NULL, page, index,
- last_index + 1 - index);
+ &sctx->ra, NULL, page_folio(page),
+ index, last_index + 1 - index);
if (!PageUptodate(page)) {
- btrfs_readpage(NULL, page);
+ btrfs_read_folio(NULL, page_folio(page));
lock_page(page);
if (!PageUptodate(page)) {
unlock_page(page);