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fs: Add FOP_HUGE_PAGES

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Instead of checking for specific file_operations, add a bit to
file_operations which denotes a file that only contain hugetlb pages.
This lets us make hugetlbfs_file_operations static, and removes
is_file_shm_hugepages() completely.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Link: https://lore.kernel.org/r/20240407201122.3783877-1-willy@infradead.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Matthew Wilcox (Oracle)
2024-04-09 10:41:33 +02:00
committed by Christian Brauner
parent 629171657a
commit 886b94d25a
5 changed files with 10 additions and 20 deletions
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8
include/linux/hugetlb.h
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@@ -554,17 +554,13 @@ static inline struct hugetlbfs_inode_info *HUGETLBFS_I(struct inode *inode)
return container_of(inode, struct hugetlbfs_inode_info, vfs_inode);
}
extern const struct file_operations hugetlbfs_file_operations;
extern const struct vm_operations_struct hugetlb_vm_ops;
struct file *hugetlb_file_setup(const char *name, size_t size, vm_flags_t acct,
int creat_flags, int page_size_log);
static inline bool is_file_hugepages(struct file *file)
static inline bool is_file_hugepages(const struct file *file)
{
if (file->f_op == &hugetlbfs_file_operations)
return true;
return is_file_shm_hugepages(file);
return file->f_op->fop_flags & FOP_HUGE_PAGES;
}
static inline struct hstate *hstate_inode(struct inode *i)