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mm: drop "wait" parameter from write_one_page() 

The callers all set it to 1.

Also, make it clear that this function will not set any sort of AS_*
error, and that the caller must do so if necessary.  No existing caller
uses this on normal files, so none of them need it.

Also, add __must_check here since, in general, the callers need to handle
an error here in some fashion.

Link: http://lkml.kernel.org/r/20170525103303.6524-1-jlayton@redhat.com
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Matthew Wilcox <mawilcox@microsoft.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
zero-colors
Jeff Layton 2017-07-05 15:26:48 -04:00
parent c86daad2c2
commit 2b69c8280c
8 changed files with 15 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
fs/exofs/dir.c
View File

@ -72,7 +72,7 @@ static int exofs_commit_chunk(struct page *page, loff_t pos, unsigned len)
set_page_dirty(page);
if (IS_DIRSYNC(dir))
err = write_one_page(page, 1);
err = write_one_page(page);
else
unlock_page(page);

2
fs/ext2/dir.c
View File

@ -100,7 +100,7 @@ static int ext2_commit_chunk(struct page *page, loff_t pos, unsigned len)
}
if (IS_DIRSYNC(dir)) {
err = write_one_page(page, 1);
err = write_one_page(page);
if (!err)
err = sync_inode_metadata(dir, 1);
} else {

4
fs/jfs/jfs_metapage.c
View File

@ -711,7 +711,7 @@ void force_metapage(struct metapage *mp)
get_page(page);
lock_page(page);
set_page_dirty(page);
write_one_page(page, 1);
write_one_page(page);
clear_bit(META_forcewrite, &mp->flag);
put_page(page);
}
@ -756,7 +756,7 @@ void release_metapage(struct metapage * mp)
set_page_dirty(page);
if (test_bit(META_sync, &mp->flag)) {
clear_bit(META_sync, &mp->flag);
write_one_page(page, 1);
write_one_page(page);
lock_page(page); /* write_one_page unlocks the page */
}
} else if (mp->lsn) /* discard_metapage doesn't remove it */

2
fs/minix/dir.c
View File

@ -57,7 +57,7 @@ static int dir_commit_chunk(struct page *page, loff_t pos, unsigned len)
mark_inode_dirty(dir);
}
if (IS_DIRSYNC(dir))
err = write_one_page(page, 1);
err = write_one_page(page);
else
unlock_page(page);
return err;

2
fs/sysv/dir.c
View File

@ -45,7 +45,7 @@ static int dir_commit_chunk(struct page *page, loff_t pos, unsigned len)
mark_inode_dirty(dir);
}
if (IS_DIRSYNC(dir))
err = write_one_page(page, 1);
err = write_one_page(page);
else
unlock_page(page);
return err;

2
fs/ufs/dir.c
View File

@ -53,7 +53,7 @@ static int ufs_commit_chunk(struct page *page, loff_t pos, unsigned len)
mark_inode_dirty(dir);
}
if (IS_DIRSYNC(dir))
err = write_one_page(page, 1);
err = write_one_page(page);
else
unlock_page(page);
return err;

2
include/linux/mm.h
View File

@ -2199,7 +2199,7 @@ extern void filemap_map_pages(struct vm_fault *vmf,
extern int filemap_page_mkwrite(struct vm_fault *vmf);
/* mm/page-writeback.c */
int write_one_page(struct page *page, int wait);
int __must_check write_one_page(struct page *page);
void task_dirty_inc(struct task_struct *tsk);
/* readahead.c */

14
mm/page-writeback.c
View File

@ -2366,15 +2366,16 @@ int do_writepages(struct address_space *mapping, struct writeback_control *wbc)
}
/**
* write_one_page - write out a single page and optionally wait on I/O
* write_one_page - write out a single page and wait on I/O
* @page: the page to write
* @wait: if true, wait on writeout
*
* The page must be locked by the caller and will be unlocked upon return.
*
* write_one_page() returns a negative error code if I/O failed.
* write_one_page() returns a negative error code if I/O failed. Note that
* the address_space is not marked for error. The caller must do this if
* needed.
*/
int write_one_page(struct page *page, int wait)
int write_one_page(struct page *page)
{
struct address_space *mapping = page->mapping;
int ret = 0;
@ -2385,13 +2386,12 @@ int write_one_page(struct page *page, int wait)
BUG_ON(!PageLocked(page));
if (wait)
wait_on_page_writeback(page);
wait_on_page_writeback(page);
if (clear_page_dirty_for_io(page)) {
get_page(page);
ret = mapping->a_ops->writepage(page, &wbc);
if (ret == 0 && wait) {
if (ret == 0) {
wait_on_page_writeback(page);
if (PageError(page))
ret = -EIO;