[PATCH 03/20] shmem: set a_ops earlier in shmem_symlink

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Set the a_ops in shmem_symlink before reading a folio from the mapping
to prepare for asserting that shmem_get_folio is only called on shmem
mappings.

Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
---
 mm/shmem.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/shmem.c b/mm/shmem.c
index f607b0cab7e4e2..1900916aa84d13 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -3506,10 +3506,10 @@ static int shmem_symlink(struct mnt_idmap *idmap, struct inode *dir,
 		inode->i_op = &shmem_short_symlink_operations;
 	} else {
 		inode_nohighmem(inode);
+		inode->i_mapping->a_ops = &shmem_aops;
 		error = shmem_get_folio(inode, 0, &folio, SGP_WRITE);
 		if (error)
 			goto out_remove_offset;
-		inode->i_mapping->a_ops = &shmem_aops;
 		inode->i_op = &shmem_symlink_inode_operations;
 		memcpy(folio_address(folio), symname, len);
 		folio_mark_uptodate(folio);
-- 
2.39.2





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