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mm/nommu: use file_has_valid_mmap_hooks() helper 

Since commit c84bf6dd2b ("mm: introduce new .mmap_prepare() file
callback"), the f_op->mmap() hook has been deprecated in favour of
f_op->mmap_prepare().

Therefore, update the check for file operations supporting mmap() by using
the file_has_valid_mmap_hooks() helper function, which checks for either
f_op->mmap or f_op->mmap_prepare rather than checking only for f_op->mmap
directly.

Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Link: https://lore.kernel.org/5f120b644b5890d1b50202d0f0d4c9f0d6b62873.1750099179.git.lorenzo.stoakes@oracle.com
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Lorenzo Stoakes 2025-06-16 20:33:21 +01:00 committed by Christian Brauner
parent 20ca475d98
commit c6900f227f
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1 changed files with 1 additions and 1 deletions
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mm/nommu.c
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@ -719,7 +719,7 @@ static int validate_mmap_request(struct file *file,
if (file) {
/* files must support mmap */
if (!file->f_op->mmap)
if (!file_has_valid_mmap_hooks(file))
return -ENODEV;
/* work out if what we've got could possibly be shared