kernel_5.10 no rt

hc

2023-12-11 6778948f9de86c3cfaf36725a7c87dcff9ba247f

 kernel/include/linux/shmem_fs.h
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@@ -8,6 +8,7 @@
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 #include <linux/pagemap.h>
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 #include <linux/percpu_counter.h>
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 #include <linux/xattr.h>
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+#include <linux/fs_parser.h>
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 /* inode in-kernel data */
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@@ -21,6 +22,7 @@
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 	struct list_head	swaplist;	/* chain of maybes on swap */
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 	struct shared_policy	policy;		/* NUMA memory alloc policy */
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 	struct simple_xattrs	xattrs;		/* list of xattrs */
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+	atomic_t		stop_eviction;	/* hold when working on inode */
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 	struct inode		vfs_inode;
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 };
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@@ -34,6 +36,9 @@
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 	unsigned char huge;	    /* Whether to try for hugepages */
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 	kuid_t uid;		    /* Mount uid for root directory */
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 	kgid_t gid;		    /* Mount gid for root directory */
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+	bool full_inums;	    /* If i_ino should be uint or ino_t */
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+	ino_t next_ino;		    /* The next per-sb inode number to use */
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+	ino_t __percpu *ino_batch;  /* The next per-cpu inode number to use */
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 	struct mempolicy *mpol;     /* default memory policy for mappings */
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 	spinlock_t shrinklist_lock;   /* Protects shrinklist */
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 	struct list_head shrinklist;  /* List of shinkable inodes */
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@@ -48,8 +53,9 @@
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 /*
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  * Functions in mm/shmem.c called directly from elsewhere:
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  */
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+extern const struct fs_parameter_spec shmem_fs_parameters[];
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 extern int shmem_init(void);
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-extern int shmem_fill_super(struct super_block *sb, void *data, int silent);
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+extern int shmem_init_fs_context(struct fs_context *fc);
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 extern struct file *shmem_file_setup(const char *name,
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 					loff_t size, unsigned long flags);
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 extern struct file *shmem_kernel_file_setup(const char *name, loff_t size,
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@@ -72,11 +78,14 @@
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 extern struct page *shmem_read_mapping_page_gfp(struct address_space *mapping,
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 					pgoff_t index, gfp_t gfp_mask);
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 extern void shmem_truncate_range(struct inode *inode, loff_t start, loff_t end);
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-extern int shmem_unuse(swp_entry_t entry, struct page *page);
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+extern int shmem_unuse(unsigned int type, bool frontswap,
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+		       unsigned long *fs_pages_to_unuse);
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+extern bool shmem_huge_enabled(struct vm_area_struct *vma);
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 extern unsigned long shmem_swap_usage(struct vm_area_struct *vma);
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 extern unsigned long shmem_partial_swap_usage(struct address_space *mapping,
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 						pgoff_t start, pgoff_t end);
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+extern void shmem_mark_page_lazyfree(struct page *page, bool tail);
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 /* Flag allocation requirements to shmem_getpage */
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 enum sgp_type {
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@@ -110,30 +119,18 @@
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 extern bool shmem_charge(struct inode *inode, long pages);
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 extern void shmem_uncharge(struct inode *inode, long pages);
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-#ifdef CONFIG_TRANSPARENT_HUGE_PAGECACHE
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-extern bool shmem_huge_enabled(struct vm_area_struct *vma);
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-#else
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-static inline bool shmem_huge_enabled(struct vm_area_struct *vma)
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-{
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-	return false;
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-}
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-#endif
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-
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+#ifdef CONFIG_USERFAULTFD
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 #ifdef CONFIG_SHMEM
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-extern int shmem_mcopy_atomic_pte(struct mm_struct *dst_mm, pmd_t *dst_pmd,
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+extern int shmem_mfill_atomic_pte(struct mm_struct *dst_mm, pmd_t *dst_pmd,
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 				  struct vm_area_struct *dst_vma,
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 				  unsigned long dst_addr,
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 				  unsigned long src_addr,
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+				  bool zeropage,
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 				  struct page **pagep);
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-extern int shmem_mfill_zeropage_pte(struct mm_struct *dst_mm,
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-				    pmd_t *dst_pmd,
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-				    struct vm_area_struct *dst_vma,
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-				    unsigned long dst_addr);
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-#else
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-#define shmem_mcopy_atomic_pte(dst_mm, dst_pte, dst_vma, dst_addr, \
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-			       src_addr, pagep)        ({ BUG(); 0; })
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-#define shmem_mfill_zeropage_pte(dst_mm, dst_pmd, dst_vma, \
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-				 dst_addr)      ({ BUG(); 0; })
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-#endif
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+#else /* !CONFIG_SHMEM */
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+#define shmem_mfill_atomic_pte(dst_mm, dst_pmd, dst_vma, dst_addr, \
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+			       src_addr, zeropage, pagep)       ({ BUG(); 0; })
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+#endif /* CONFIG_SHMEM */
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+#endif /* CONFIG_USERFAULTFD */
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 #endif