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Subject[PATCH v10 21/25] ext4: Pass the inode to ext4_mpage_readpages
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From: "Matthew Wilcox (Oracle)" <willy@infradead.org>

This function now only uses the mapping argument to look up the inode,
and both callers already have the inode, so just pass the inode instead
of the mapping.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Reviewed-by: Eric Biggers <ebiggers@google.com>
---
fs/ext4/ext4.h | 2 +-
fs/ext4/inode.c | 4 ++--
fs/ext4/readpage.c | 3 +--
3 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 95b4bb2cc44c..a9c133e6f786 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -3298,7 +3298,7 @@ static inline void ext4_set_de_type(struct super_block *sb,
}

/* readpages.c */
-extern int ext4_mpage_readpages(struct address_space *mapping,
+extern int ext4_mpage_readpages(struct inode *inode,
struct readahead_control *rac, struct page *page);
extern int __init ext4_init_post_read_processing(void);
extern void ext4_exit_post_read_processing(void);
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index a867835bca2d..27b35a79f99c 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -3226,7 +3226,7 @@ static int ext4_readpage(struct file *file, struct page *page)
ret = ext4_readpage_inline(inode, page);

if (ret == -EAGAIN)
- return ext4_mpage_readpages(page->mapping, NULL, page);
+ return ext4_mpage_readpages(inode, NULL, page);

return ret;
}
@@ -3239,7 +3239,7 @@ static void ext4_readahead(struct readahead_control *rac)
if (ext4_has_inline_data(inode))
return;

- ext4_mpage_readpages(rac->mapping, rac, NULL);
+ ext4_mpage_readpages(inode, rac, NULL);
}

static void ext4_invalidatepage(struct page *page, unsigned int offset,
diff --git a/fs/ext4/readpage.c b/fs/ext4/readpage.c
index 66275f25235d..5761e9961682 100644
--- a/fs/ext4/readpage.c
+++ b/fs/ext4/readpage.c
@@ -221,13 +221,12 @@ static inline loff_t ext4_readpage_limit(struct inode *inode)
return i_size_read(inode);
}

-int ext4_mpage_readpages(struct address_space *mapping,
+int ext4_mpage_readpages(struct inode *inode,
struct readahead_control *rac, struct page *page)
{
struct bio *bio = NULL;
sector_t last_block_in_bio = 0;

- struct inode *inode = mapping->host;
const unsigned blkbits = inode->i_blkbits;
const unsigned blocks_per_page = PAGE_SIZE >> blkbits;
const unsigned blocksize = 1 << blkbits;
--
2.25.1
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