korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-27 22:24:11 +08:00
Code Issues Packages Projects Releases Wiki Activity

gfs2: convert gfs2_write_cache_jdata() to use filemap_get_folios_tag()

Browse Source 
Convert function to use folios throughout.  This is in preparation for the
removal of find_get_pgaes_range_tag().  This change removes 8 calls to
compound_head().

Also had to modify and rename gfs2_write_jdata_pagevec() to take in and
utilize folio_batch rather than pagevec and use folios rather than pages. 
gfs2_write_jdata_batch() now supports large folios.

Link: https://lkml.kernel.org/r/20230104211448.4804-18-vishal.moola@gmail.com
Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Reviewed-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Vishal Moola (Oracle) 2023-01-04 13:14:42 -08:00 committed by Andrew Morton
parent 580e7a4926
commit 87ed37e66d
1 changed files with 35 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

64
fs/gfs2/aops.c
View File

@ -195,67 +195,71 @@ static int gfs2_writepages(struct address_space *mapping,
}
/**
* gfs2_write_jdata_pagevec - Write back a pagevec's worth of pages
* gfs2_write_jdata_batch - Write back a folio batch's worth of folios
* @mapping: The mapping
* @wbc: The writeback control
* @pvec: The vector of pages
* @nr_pages: The number of pages to write
* @fbatch: The batch of folios
* @done_index: Page index
*
* Returns: non-zero if loop should terminate, zero otherwise
*/
static int gfs2_write_jdata_pagevec(struct address_space *mapping,
static int gfs2_write_jdata_batch(struct address_space *mapping,
struct writeback_control *wbc,
struct pagevec *pvec,
int nr_pages,
struct folio_batch *fbatch,
pgoff_t *done_index)
{
struct inode *inode = mapping->host;
struct gfs2_sbd *sdp = GFS2_SB(inode);
unsigned nrblocks = nr_pages * (PAGE_SIZE >> inode->i_blkbits);
unsigned nrblocks;
int i;
int ret;
int nr_pages = 0;
int nr_folios = folio_batch_count(fbatch);
for (i = 0; i < nr_folios; i++)
nr_pages += folio_nr_pages(fbatch->folios[i]);
nrblocks = nr_pages * (PAGE_SIZE >> inode->i_blkbits);
ret = gfs2_trans_begin(sdp, nrblocks, nrblocks);
if (ret < 0)
return ret;
for(i = 0; i < nr_pages; i++) {
struct page *page = pvec->pages[i];
for (i = 0; i < nr_folios; i++) {
struct folio *folio = fbatch->folios[i];
*done_index = page->index;
*done_index = folio->index;
lock_page(page);
folio_lock(folio);
if (unlikely(page->mapping != mapping)) {
if (unlikely(folio->mapping != mapping)) {
continue_unlock:
unlock_page(page);
folio_unlock(folio);
continue;
}
if (!PageDirty(page)) {
if (!folio_test_dirty(folio)) {
/* someone wrote it for us */
goto continue_unlock;
}
if (PageWriteback(page)) {
if (folio_test_writeback(folio)) {
if (wbc->sync_mode != WB_SYNC_NONE)
wait_on_page_writeback(page);
folio_wait_writeback(folio);
else
goto continue_unlock;
}
BUG_ON(PageWriteback(page));
if (!clear_page_dirty_for_io(page))
BUG_ON(folio_test_writeback(folio));
if (!folio_clear_dirty_for_io(folio))
goto continue_unlock;
trace_wbc_writepage(wbc, inode_to_bdi(inode));
ret = __gfs2_jdata_writepage(page, wbc);
ret = __gfs2_jdata_writepage(&folio->page, wbc);
if (unlikely(ret)) {
if (ret == AOP_WRITEPAGE_ACTIVATE) {
unlock_page(page);
folio_unlock(folio);
ret = 0;
} else {
@ -268,7 +272,8 @@ continue_unlock:
* not be suitable for data integrity
* writeout).
*/
*done_index = page->index + 1;
*done_index = folio->index +
folio_nr_pages(folio);
ret = 1;
break;
}
@ -305,8 +310,8 @@ static int gfs2_write_cache_jdata(struct address_space *mapping,
{
int ret = 0;
int done = 0;
struct pagevec pvec;
int nr_pages;
struct folio_batch fbatch;
int nr_folios;
pgoff_t writeback_index;
pgoff_t index;
pgoff_t end;
@ -315,7 +320,7 @@ static int gfs2_write_cache_jdata(struct address_space *mapping,
int range_whole = 0;
xa_mark_t tag;
pagevec_init(&pvec);
folio_batch_init(&fbatch);
if (wbc->range_cyclic) {
writeback_index = mapping->writeback_index; /* prev offset */
index = writeback_index;
@ -341,17 +346,18 @@ retry:
tag_pages_for_writeback(mapping, index, end);
done_index = index;
while (!done && (index <= end)) {
nr_pages = pagevec_lookup_range_tag(&pvec, mapping, &index, end,
tag);
if (nr_pages == 0)
nr_folios = filemap_get_folios_tag(mapping, &index, end,
tag, &fbatch);
if (nr_folios == 0)
break;
ret = gfs2_write_jdata_pagevec(mapping, wbc, &pvec, nr_pages, &done_index);
ret = gfs2_write_jdata_batch(mapping, wbc, &fbatch,
&done_index);
if (ret)
done = 1;
if (ret > 0)
ret = 0;
pagevec_release(&pvec);
folio_batch_release(&fbatch);
cond_resched();
}