Patch "cifs: Don't use certain unnecessary folio_*() functions" has been added to the 6.6-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    cifs: Don't use certain unnecessary folio_*() functions

to the 6.6-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     cifs-don-t-use-certain-unnecessary-folio_-functions.patch
and it can be found in the queue-6.6 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 2f459ff28032e80775cdbb3dc857cd86e3768e20
Author: David Howells <dhowells@xxxxxxxxxx>
Date:   Tue Jan 9 17:54:35 2024 +0000

    cifs: Don't use certain unnecessary folio_*() functions
    
    [ Upstream commit c40497d82387188f14d9adc4caa58ee1cb1999e1 ]
    
    Filesystems should use folio->index and folio->mapping, instead of
    folio_index(folio), folio_mapping() and folio_file_mapping() since
    they know that it's in the pagecache.
    
    Change this automagically with:
    
    perl -p -i -e 's/folio_mapping[(]([^)]*)[)]/\1->mapping/g' fs/smb/client/*.c
    perl -p -i -e 's/folio_file_mapping[(]([^)]*)[)]/\1->mapping/g' fs/smb/client/*.c
    perl -p -i -e 's/folio_index[(]([^)]*)[)]/\1->index/g' fs/smb/client/*.c
    
    Reported-by: Matthew Wilcox <willy@xxxxxxxxxxxxx>
    Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
    cc: Jeff Layton <jlayton@xxxxxxxxxx>
    cc: Steve French <sfrench@xxxxxxxxx>
    cc: Paulo Alcantara <pc@xxxxxxxxxxxxx>
    cc: Ronnie Sahlberg <lsahlber@xxxxxxxxxx>
    cc: Shyam Prasad N <sprasad@xxxxxxxxxxxxx>
    cc: Tom Talpey <tom@xxxxxxxxxx>
    cc: linux-cifs@xxxxxxxxxxxxxxx
    cc: linux-fsdevel@xxxxxxxxxxxxxxx
    Stable-dep-of: f3dc1bdb6b0b ("cifs: Fix writeback data corruption")
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/fs/smb/client/file.c b/fs/smb/client/file.c
index 043bee4020a91..7320272ef0074 100644
--- a/fs/smb/client/file.c
+++ b/fs/smb/client/file.c
@@ -87,7 +87,7 @@ void cifs_pages_written_back(struct inode *inode, loff_t start, unsigned int len
 			continue;
 		if (!folio_test_writeback(folio)) {
 			WARN_ONCE(1, "bad %x @%llx page %lx %lx\n",
-				  len, start, folio_index(folio), end);
+				  len, start, folio->index, end);
 			continue;
 		}
 
@@ -120,7 +120,7 @@ void cifs_pages_write_failed(struct inode *inode, loff_t start, unsigned int len
 			continue;
 		if (!folio_test_writeback(folio)) {
 			WARN_ONCE(1, "bad %x @%llx page %lx %lx\n",
-				  len, start, folio_index(folio), end);
+				  len, start, folio->index, end);
 			continue;
 		}
 
@@ -151,7 +151,7 @@ void cifs_pages_write_redirty(struct inode *inode, loff_t start, unsigned int le
 	xas_for_each(&xas, folio, end) {
 		if (!folio_test_writeback(folio)) {
 			WARN_ONCE(1, "bad %x @%llx page %lx %lx\n",
-				  len, start, folio_index(folio), end);
+				  len, start, folio->index, end);
 			continue;
 		}
 
@@ -2652,7 +2652,7 @@ static void cifs_extend_writeback(struct address_space *mapping,
 				continue;
 			if (xa_is_value(folio))
 				break;
-			if (folio_index(folio) != index)
+			if (folio->index != index)
 				break;
 			if (!folio_try_get_rcu(folio)) {
 				xas_reset(&xas);
@@ -2900,7 +2900,7 @@ static int cifs_writepages_region(struct address_space *mapping,
 					goto skip_write;
 			}
 
-			if (folio_mapping(folio) != mapping ||
+			if (folio->mapping != mapping ||
 			    !folio_test_dirty(folio)) {
 				start += folio_size(folio);
 				folio_unlock(folio);