Use the new readahead operation in erofs
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Acked-by: Gao Xiang <gaoxiang25@huawei.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Cong Wang <xiyou.wangcong@gmail.com>
Cc: Darrick J. Wong <darrick.wong@oracle.com>
Cc: Dave Chinner <dchinner@redhat.com>
Cc: Eric Biggers <ebiggers@google.com>
Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Zi Yan <ziy@nvidia.com>
Cc: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Cc: Miklos Szeredi <mszeredi@redhat.com>
Link: http://lkml.kernel.org/r/20200414150233.24495-19-willy@infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-static int erofs_raw_access_readpages(struct file *filp,
- struct address_space *mapping,
- struct list_head *pages,
- unsigned int nr_pages)
+static void erofs_raw_access_readahead(struct readahead_control *rac)
{
erofs_off_t last_block;
struct bio *bio = NULL;
{
erofs_off_t last_block;
struct bio *bio = NULL;
- gfp_t gfp = readahead_gfp_mask(mapping);
- struct page *page = list_last_entry(pages, struct page, lru);
-
- trace_erofs_readpages(mapping->host, page, nr_pages, true);
- for (; nr_pages; --nr_pages) {
- page = list_entry(pages->prev, struct page, lru);
+ trace_erofs_readpages(rac->mapping->host, readahead_index(rac),
+ readahead_count(rac), true);
+ while ((page = readahead_page(rac))) {
- if (!add_to_page_cache_lru(page, mapping, page->index, gfp)) {
- bio = erofs_read_raw_page(bio, mapping, page,
- &last_block, nr_pages, true);
+ bio = erofs_read_raw_page(bio, rac->mapping, page, &last_block,
+ readahead_count(rac), true);
- /* all the page errors are ignored when readahead */
- if (IS_ERR(bio)) {
- pr_err("%s, readahead error at page %lu of nid %llu\n",
- __func__, page->index,
- EROFS_I(mapping->host)->nid);
+ /* all the page errors are ignored when readahead */
+ if (IS_ERR(bio)) {
+ pr_err("%s, readahead error at page %lu of nid %llu\n",
+ __func__, page->index,
+ EROFS_I(rac->mapping->host)->nid);
- /* pages could still be locked */
- DBG_BUGON(!list_empty(pages));
/* the rare case (end in gaps) */
if (bio)
submit_bio(bio);
/* the rare case (end in gaps) */
if (bio)
submit_bio(bio);
}
static int erofs_get_block(struct inode *inode, sector_t iblock,
}
static int erofs_get_block(struct inode *inode, sector_t iblock,
/* for uncompressed (aligned) files and raw access for other files */
const struct address_space_operations erofs_raw_access_aops = {
.readpage = erofs_raw_access_readpage,
/* for uncompressed (aligned) files and raw access for other files */
const struct address_space_operations erofs_raw_access_aops = {
.readpage = erofs_raw_access_readpage,
- .readpages = erofs_raw_access_readpages,
+ .readahead = erofs_raw_access_readahead,
struct page *head = NULL;
LIST_HEAD(pagepool);
struct page *head = NULL;
LIST_HEAD(pagepool);
- trace_erofs_readpages(mapping->host, lru_to_page(pages),
+ trace_erofs_readpages(mapping->host, lru_to_page(pages)->index,
nr_pages, false);
f.headoffset = (erofs_off_t)lru_to_page(pages)->index << PAGE_SHIFT;
nr_pages, false);
f.headoffset = (erofs_off_t)lru_to_page(pages)->index << PAGE_SHIFT;
TRACE_EVENT(erofs_readpages,
TRACE_EVENT(erofs_readpages,
- TP_PROTO(struct inode *inode, struct page *page, unsigned int nrpage,
+ TP_PROTO(struct inode *inode, pgoff_t start, unsigned int nrpage,
- TP_ARGS(inode, page, nrpage, raw),
+ TP_ARGS(inode, start, nrpage, raw),
TP_STRUCT__entry(
__field(dev_t, dev )
TP_STRUCT__entry(
__field(dev_t, dev )
TP_fast_assign(
__entry->dev = inode->i_sb->s_dev;
__entry->nid = EROFS_I(inode)->nid;
TP_fast_assign(
__entry->dev = inode->i_sb->s_dev;
__entry->nid = EROFS_I(inode)->nid;
- __entry->start = page->index;
+ __entry->start = start;
__entry->nrpage = nrpage;
__entry->raw = raw;
),
__entry->nrpage = nrpage;
__entry->raw = raw;
),