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fs: convert mpage_readpages to mpage_readahead

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Implement the new readahead aop and convert all callers (block_dev,
exfat, ext2, fat, gfs2, hpfs, isofs, jfs, nilfs2, ocfs2, omfs, qnx6,
reiserfs & udf).

The callers are all trivial except for GFS2 & OCFS2.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Junxiao Bi <junxiao.bi@oracle.com> # ocfs2
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com> # ocfs2
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Cc: Chao Yu <yuchao0@huawei.com>
Cc: Cong Wang <xiyou.wangcong@gmail.com>
Cc: Darrick J. Wong <darrick.wong@oracle.com>
Cc: Eric Biggers <ebiggers@google.com>
Cc: Gao Xiang <gaoxiang25@huawei.com>
Cc: Jaegeuk Kim <jaegeuk@kernel.org>
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/20200414150233.24495-17-willy@infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
This commit is contained in:
Matthew Wilcox (Oracle) 2020-06-16 14:31:47 +09:00 committed by Namjae Jeon
parent 859f936085
commit b457fd79f9
1 changed files with 11 additions and 0 deletions
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11
inode.c
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@ -365,11 +365,18 @@ static int exfat_readpage(struct file *file, struct page *page)
return mpage_readpage(page, exfat_get_block);
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 8, 0)
static void exfat_readahead(struct readahead_control *rac)
{
mpage_readahead(rac, exfat_get_block);
}
#else
static int exfat_readpages(struct file *file, struct address_space *mapping,
struct list_head *pages, unsigned int nr_pages)
{
return mpage_readpages(mapping, pages, nr_pages, exfat_get_block);
}
#endif
static int exfat_writepage(struct page *page, struct writeback_control *wbc)
{
@ -509,7 +516,11 @@ int exfat_block_truncate_page(struct inode *inode, loff_t from)
static const struct address_space_operations exfat_aops = {
.readpage = exfat_readpage,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 8, 0)
.readahead = exfat_readahead,
#else
.readpages = exfat_readpages,
#endif
.writepage = exfat_writepage,
.writepages = exfat_writepages,
.write_begin = exfat_write_begin,