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authorDavid Howells <dhowells@redhat.com>2021-08-11 11:49:13 +0300
committerDavid Howells <dhowells@redhat.com>2021-11-11 00:16:56 +0300
commit78525c74d9e7d1a6ce69bd4388f045f6e474a20b (patch)
tree53b2a3a3f9577e71c98d0654ad5d816720f4bee2 /fs/afs/file.c
parent452c472e26348df1e7052544130aa98eebbd2331 (diff)
downloadlinux-78525c74d9e7d1a6ce69bd4388f045f6e474a20b.tar.xz
netfs, 9p, afs, ceph: Use folios
Convert the netfs helper library to use folios throughout, convert the 9p and afs filesystems to use folios in their file I/O paths and convert the ceph filesystem to use just enough folios to compile. With these changes, afs passes -g quick xfstests. Changes ======= ver #5: - Got rid of folio_end{io,_read,_write}() and inlined the stuff it does instead (Willy decided he didn't want this after all). ver #4: - Fixed a bug in afs_redirty_page() whereby it didn't set the next page index in the loop and returned too early. - Simplified a check in v9fs_vfs_write_folio_locked()[1]. - Undid a change to afs_symlink_readpage()[1]. - Used offset_in_folio() in afs_write_end()[1]. - Changed from using page_endio() to folio_end{io,_read,_write}()[1]. ver #2: - Add 9p foliation. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Tested-by: Jeff Layton <jlayton@kernel.org> Tested-by: Dominique Martinet <asmadeus@codewreck.org> Tested-by: kafs-testing@auristor.com cc: Matthew Wilcox (Oracle) <willy@infradead.org> cc: Marc Dionne <marc.dionne@auristor.com> cc: Ilya Dryomov <idryomov@gmail.com> cc: Dominique Martinet <asmadeus@codewreck.org> cc: v9fs-developer@lists.sourceforge.net cc: linux-afs@lists.infradead.org cc: ceph-devel@vger.kernel.org cc: linux-cachefs@redhat.com Link: https://lore.kernel.org/r/YYKa3bfQZxK5/wDN@casper.infradead.org/ [1] Link: https://lore.kernel.org/r/2408234.1628687271@warthog.procyon.org.uk/ # rfc Link: https://lore.kernel.org/r/162877311459.3085614.10601478228012245108.stgit@warthog.procyon.org.uk/ Link: https://lore.kernel.org/r/162981153551.1901565.3124454657133703341.stgit@warthog.procyon.org.uk/ Link: https://lore.kernel.org/r/163005745264.2472992.9852048135392188995.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/163584187452.4023316.500389675405550116.stgit@warthog.procyon.org.uk/ # v3 Link: https://lore.kernel.org/r/163649328026.309189.1124218109373941936.stgit@warthog.procyon.org.uk/ # v4 Link: https://lore.kernel.org/r/163657852454.834781.9265101983152100556.stgit@warthog.procyon.org.uk/ # v5
Diffstat (limited to 'fs/afs/file.c')
-rw-r--r--fs/afs/file.c70
1 files changed, 39 insertions, 31 deletions
diff --git a/fs/afs/file.c b/fs/afs/file.c
index eb11d047c0ae..cb6ad61eec3b 100644
--- a/fs/afs/file.c
+++ b/fs/afs/file.c
@@ -324,21 +324,24 @@ static int afs_symlink_readpage(struct file *file, struct page *page)
{
struct afs_vnode *vnode = AFS_FS_I(page->mapping->host);
struct afs_read *fsreq;
+ struct folio *folio = page_folio(page);
int ret;
fsreq = afs_alloc_read(GFP_NOFS);
if (!fsreq)
return -ENOMEM;
- fsreq->pos = page->index * PAGE_SIZE;
- fsreq->len = PAGE_SIZE;
+ fsreq->pos = folio_pos(folio);
+ fsreq->len = folio_size(folio);
fsreq->vnode = vnode;
fsreq->iter = &fsreq->def_iter;
iov_iter_xarray(&fsreq->def_iter, READ, &page->mapping->i_pages,
fsreq->pos, fsreq->len);
ret = afs_fetch_data(fsreq->vnode, fsreq);
- page_endio(page, false, ret);
+ if (ret == 0)
+ SetPageUptodate(page);
+ unlock_page(page);
return ret;
}
@@ -362,7 +365,7 @@ static int afs_begin_cache_operation(struct netfs_read_request *rreq)
}
static int afs_check_write_begin(struct file *file, loff_t pos, unsigned len,
- struct page *page, void **_fsdata)
+ struct folio *folio, void **_fsdata)
{
struct afs_vnode *vnode = AFS_FS_I(file_inode(file));
@@ -385,7 +388,9 @@ const struct netfs_read_request_ops afs_req_ops = {
static int afs_readpage(struct file *file, struct page *page)
{
- return netfs_readpage(file, page, &afs_req_ops, NULL);
+ struct folio *folio = page_folio(page);
+
+ return netfs_readpage(file, folio, &afs_req_ops, NULL);
}
static void afs_readahead(struct readahead_control *ractl)
@@ -397,29 +402,29 @@ static void afs_readahead(struct readahead_control *ractl)
* Adjust the dirty region of the page on truncation or full invalidation,
* getting rid of the markers altogether if the region is entirely invalidated.
*/
-static void afs_invalidate_dirty(struct page *page, unsigned int offset,
+static void afs_invalidate_dirty(struct folio *folio, unsigned int offset,
unsigned int length)
{
- struct afs_vnode *vnode = AFS_FS_I(page->mapping->host);
+ struct afs_vnode *vnode = AFS_FS_I(folio_inode(folio));
unsigned long priv;
unsigned int f, t, end = offset + length;
- priv = page_private(page);
+ priv = (unsigned long)folio_get_private(folio);
/* we clean up only if the entire page is being invalidated */
- if (offset == 0 && length == thp_size(page))
+ if (offset == 0 && length == folio_size(folio))
goto full_invalidate;
/* If the page was dirtied by page_mkwrite(), the PTE stays writable
* and we don't get another notification to tell us to expand it
* again.
*/
- if (afs_is_page_dirty_mmapped(priv))
+ if (afs_is_folio_dirty_mmapped(priv))
return;
/* We may need to shorten the dirty region */
- f = afs_page_dirty_from(page, priv);
- t = afs_page_dirty_to(page, priv);
+ f = afs_folio_dirty_from(folio, priv);
+ t = afs_folio_dirty_to(folio, priv);
if (t <= offset || f >= end)
return; /* Doesn't overlap */
@@ -437,17 +442,17 @@ static void afs_invalidate_dirty(struct page *page, unsigned int offset,
if (f == t)
goto undirty;
- priv = afs_page_dirty(page, f, t);
- set_page_private(page, priv);
- trace_afs_page_dirty(vnode, tracepoint_string("trunc"), page);
+ priv = afs_folio_dirty(folio, f, t);
+ folio_change_private(folio, (void *)priv);
+ trace_afs_folio_dirty(vnode, tracepoint_string("trunc"), folio);
return;
undirty:
- trace_afs_page_dirty(vnode, tracepoint_string("undirty"), page);
- clear_page_dirty_for_io(page);
+ trace_afs_folio_dirty(vnode, tracepoint_string("undirty"), folio);
+ folio_clear_dirty_for_io(folio);
full_invalidate:
- trace_afs_page_dirty(vnode, tracepoint_string("inval"), page);
- detach_page_private(page);
+ trace_afs_folio_dirty(vnode, tracepoint_string("inval"), folio);
+ folio_detach_private(folio);
}
/*
@@ -458,14 +463,16 @@ full_invalidate:
static void afs_invalidatepage(struct page *page, unsigned int offset,
unsigned int length)
{
- _enter("{%lu},%u,%u", page->index, offset, length);
+ struct folio *folio = page_folio(page);
+
+ _enter("{%lu},%u,%u", folio_index(folio), offset, length);
BUG_ON(!PageLocked(page));
if (PagePrivate(page))
- afs_invalidate_dirty(page, offset, length);
+ afs_invalidate_dirty(folio, offset, length);
- wait_on_page_fscache(page);
+ folio_wait_fscache(folio);
_leave("");
}
@@ -475,30 +482,31 @@ static void afs_invalidatepage(struct page *page, unsigned int offset,
*/
static int afs_releasepage(struct page *page, gfp_t gfp_flags)
{
- struct afs_vnode *vnode = AFS_FS_I(page->mapping->host);
+ struct folio *folio = page_folio(page);
+ struct afs_vnode *vnode = AFS_FS_I(folio_inode(folio));
_enter("{{%llx:%llu}[%lu],%lx},%x",
- vnode->fid.vid, vnode->fid.vnode, page->index, page->flags,
+ vnode->fid.vid, vnode->fid.vnode, folio_index(folio), folio->flags,
gfp_flags);
/* deny if page is being written to the cache and the caller hasn't
* elected to wait */
#ifdef CONFIG_AFS_FSCACHE
- if (PageFsCache(page)) {
+ if (folio_test_fscache(folio)) {
if (!(gfp_flags & __GFP_DIRECT_RECLAIM) || !(gfp_flags & __GFP_FS))
return false;
- wait_on_page_fscache(page);
+ folio_wait_fscache(folio);
}
#endif
- if (PagePrivate(page)) {
- trace_afs_page_dirty(vnode, tracepoint_string("rel"), page);
- detach_page_private(page);
+ if (folio_test_private(folio)) {
+ trace_afs_folio_dirty(vnode, tracepoint_string("rel"), folio);
+ folio_detach_private(folio);
}
- /* indicate that the page can be released */
+ /* Indicate that the folio can be released */
_leave(" = T");
- return 1;
+ return true;
}
static void afs_add_open_mmap(struct afs_vnode *vnode)