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-rw-r--r--Documentation/filesystems/Locking3
-rw-r--r--Documentation/filesystems/vfs.txt7
-rw-r--r--fs/exofs/inode.c1
-rw-r--r--fs/ext2/inode.c1
-rw-r--r--fs/ext2/xip.c45
-rw-r--r--fs/ext2/xip.h3
-rw-r--r--fs/open.c5
-rw-r--r--include/linux/fs.h2
-rw-r--r--include/linux/rmap.h2
-rw-r--r--mm/Makefile1
-rw-r--r--mm/fadvise.c6
-rw-r--r--mm/filemap_xip.c24
-rw-r--r--mm/madvise.c2
13 files changed, 7 insertions, 95 deletions
diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking
index b30753cbf431..2ca3d17eee56 100644
--- a/Documentation/filesystems/Locking
+++ b/Documentation/filesystems/Locking
@@ -199,8 +199,6 @@ prototypes:
int (*releasepage) (struct page *, int);
void (*freepage)(struct page *);
int (*direct_IO)(int, struct kiocb *, struct iov_iter *iter, loff_t offset);
- int (*get_xip_mem)(struct address_space *, pgoff_t, int, void **,
- unsigned long *);
int (*migratepage)(struct address_space *, struct page *, struct page *);
int (*launder_page)(struct page *);
int (*is_partially_uptodate)(struct page *, unsigned long, unsigned long);
@@ -225,7 +223,6 @@ invalidatepage: yes
releasepage: yes
freepage: yes
direct_IO:
-get_xip_mem: maybe
migratepage: yes (both)
launder_page: yes
is_partially_uptodate: yes
diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt
index 43ce0507ee25..966b22829f3b 100644
--- a/Documentation/filesystems/vfs.txt
+++ b/Documentation/filesystems/vfs.txt
@@ -591,8 +591,6 @@ struct address_space_operations {
int (*releasepage) (struct page *, int);
void (*freepage)(struct page *);
ssize_t (*direct_IO)(int, struct kiocb *, struct iov_iter *iter, loff_t offset);
- struct page* (*get_xip_page)(struct address_space *, sector_t,
- int);
/* migrate the contents of a page to the specified target */
int (*migratepage) (struct page *, struct page *);
int (*launder_page) (struct page *);
@@ -748,11 +746,6 @@ struct address_space_operations {
and transfer data directly between the storage and the
application's address space.
- get_xip_page: called by the VM to translate a block number to a page.
- The page is valid until the corresponding filesystem is unmounted.
- Filesystems that want to use execute-in-place (XIP) need to implement
- it. An example implementation can be found in fs/ext2/xip.c.
-
migrate_page: This is used to compact the physical memory usage.
If the VM wants to relocate a page (maybe off a memory card
that is signalling imminent failure) it will pass a new page
diff --git a/fs/exofs/inode.c b/fs/exofs/inode.c
index 6fc91df99ff8..a198e94813fe 100644
--- a/fs/exofs/inode.c
+++ b/fs/exofs/inode.c
@@ -985,7 +985,6 @@ const struct address_space_operations exofs_aops = {
.direct_IO = exofs_direct_IO,
/* With these NULL has special meaning or default is not exported */
- .get_xip_mem = NULL,
.migratepage = NULL,
.launder_page = NULL,
.is_partially_uptodate = NULL,
diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index 5ac0a3461b3c..59d6c7d43740 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -894,7 +894,6 @@ const struct address_space_operations ext2_aops = {
const struct address_space_operations ext2_aops_xip = {
.bmap = ext2_bmap,
- .get_xip_mem = ext2_get_xip_mem,
.direct_IO = ext2_direct_IO,
};
diff --git a/fs/ext2/xip.c b/fs/ext2/xip.c
index 8cfca3a4cd58..132d4daf98c4 100644
--- a/fs/ext2/xip.c
+++ b/fs/ext2/xip.c
@@ -13,35 +13,6 @@
#include "ext2.h"
#include "xip.h"
-static inline long __inode_direct_access(struct inode *inode, sector_t block,
- void **kaddr, unsigned long *pfn, long size)
-{
- struct block_device *bdev = inode->i_sb->s_bdev;
- sector_t sector = block * (PAGE_SIZE / 512);
- return bdev_direct_access(bdev, sector, kaddr, pfn, size);
-}
-
-static inline int
-__ext2_get_block(struct inode *inode, pgoff_t pgoff, int create,
- sector_t *result)
-{
- struct buffer_head tmp;
- int rc;
-
- memset(&tmp, 0, sizeof(struct buffer_head));
- tmp.b_size = 1 << inode->i_blkbits;
- rc = ext2_get_block(inode, pgoff, &tmp, create);
- *result = tmp.b_blocknr;
-
- /* did we get a sparse block (hole in the file)? */
- if (!tmp.b_blocknr && !rc) {
- BUG_ON(create);
- rc = -ENODATA;
- }
-
- return rc;
-}
-
void ext2_xip_verify_sb(struct super_block *sb)
{
struct ext2_sb_info *sbi = EXT2_SB(sb);
@@ -54,19 +25,3 @@ void ext2_xip_verify_sb(struct super_block *sb)
"not supported by bdev");
}
}
-
-int ext2_get_xip_mem(struct address_space *mapping, pgoff_t pgoff, int create,
- void **kmem, unsigned long *pfn)
-{
- long rc;
- sector_t block;
-
- /* first, retrieve the sector number */
- rc = __ext2_get_block(mapping->host, pgoff, create, &block);
- if (rc)
- return rc;
-
- /* retrieve address of the target data */
- rc = __inode_direct_access(mapping->host, block, kmem, pfn, PAGE_SIZE);
- return (rc < 0) ? rc : 0;
-}
diff --git a/fs/ext2/xip.h b/fs/ext2/xip.h
index b2592f2f3c9d..e7b9f0a2cc54 100644
--- a/fs/ext2/xip.h
+++ b/fs/ext2/xip.h
@@ -12,10 +12,7 @@ static inline int ext2_use_xip (struct super_block *sb)
struct ext2_sb_info *sbi = EXT2_SB(sb);
return (sbi->s_mount_opt & EXT2_MOUNT_XIP);
}
-int ext2_get_xip_mem(struct address_space *, pgoff_t, int,
- void **, unsigned long *);
#else
#define ext2_xip_verify_sb(sb) do { } while (0)
#define ext2_use_xip(sb) 0
-#define ext2_get_xip_mem NULL
#endif
diff --git a/fs/open.c b/fs/open.c
index 813be037b412..a293c2020676 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -667,11 +667,8 @@ int open_check_o_direct(struct file *f)
{
/* NB: we're sure to have correct a_ops only after f_op->open */
if (f->f_flags & O_DIRECT) {
- if (!f->f_mapping->a_ops ||
- ((!f->f_mapping->a_ops->direct_IO) &&
- (!f->f_mapping->a_ops->get_xip_mem))) {
+ if (!f->f_mapping->a_ops || !f->f_mapping->a_ops->direct_IO)
return -EINVAL;
- }
}
return 0;
}
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 2c8f9055af38..9772d655f444 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -362,8 +362,6 @@ struct address_space_operations {
int (*releasepage) (struct page *, gfp_t);
void (*freepage)(struct page *);
ssize_t (*direct_IO)(int, struct kiocb *, struct iov_iter *iter, loff_t offset);
- int (*get_xip_mem)(struct address_space *, pgoff_t, int,
- void **, unsigned long *);
/*
* migrate the contents of a page to the specified target. If
* migrate_mode is MIGRATE_ASYNC, it must not block.
diff --git a/include/linux/rmap.h b/include/linux/rmap.h
index b38f559130d5..c4c559a45dc8 100644
--- a/include/linux/rmap.h
+++ b/include/linux/rmap.h
@@ -198,7 +198,7 @@ int page_referenced(struct page *, int is_locked,
int try_to_unmap(struct page *, enum ttu_flags flags);
/*
- * Called from mm/filemap_xip.c to unmap empty zero page
+ * Used by uprobes to replace a userspace page safely
*/
pte_t *__page_check_address(struct page *, struct mm_struct *,
unsigned long, spinlock_t **, int);
diff --git a/mm/Makefile b/mm/Makefile
index 088c68e9ec35..3c1caa2693bd 100644
--- a/mm/Makefile
+++ b/mm/Makefile
@@ -55,7 +55,6 @@ obj-$(CONFIG_KMEMCHECK) += kmemcheck.o
obj-$(CONFIG_KASAN) += kasan/
obj-$(CONFIG_FAILSLAB) += failslab.o
obj-$(CONFIG_MEMORY_HOTPLUG) += memory_hotplug.o
-obj-$(CONFIG_FS_XIP) += filemap_xip.o
obj-$(CONFIG_MIGRATION) += migrate.o
obj-$(CONFIG_QUICKLIST) += quicklist.o
obj-$(CONFIG_TRANSPARENT_HUGEPAGE) += huge_memory.o
diff --git a/mm/fadvise.c b/mm/fadvise.c
index fac23ecf8d72..4a3907cf79f8 100644
--- a/mm/fadvise.c
+++ b/mm/fadvise.c
@@ -28,6 +28,7 @@
SYSCALL_DEFINE4(fadvise64_64, int, fd, loff_t, offset, loff_t, len, int, advice)
{
struct fd f = fdget(fd);
+ struct inode *inode;
struct address_space *mapping;
struct backing_dev_info *bdi;
loff_t endbyte; /* inclusive */
@@ -39,7 +40,8 @@ SYSCALL_DEFINE4(fadvise64_64, int, fd, loff_t, offset, loff_t, len, int, advice)
if (!f.file)
return -EBADF;
- if (S_ISFIFO(file_inode(f.file)->i_mode)) {
+ inode = file_inode(f.file);
+ if (S_ISFIFO(inode->i_mode)) {
ret = -ESPIPE;
goto out;
}
@@ -50,7 +52,7 @@ SYSCALL_DEFINE4(fadvise64_64, int, fd, loff_t, offset, loff_t, len, int, advice)
goto out;
}
- if (mapping->a_ops->get_xip_mem) {
+ if (IS_DAX(inode)) {
switch (advice) {
case POSIX_FADV_NORMAL:
case POSIX_FADV_RANDOM:
diff --git a/mm/filemap_xip.c b/mm/filemap_xip.c
deleted file mode 100644
index 8e3f99b61959..000000000000
--- a/mm/filemap_xip.c
+++ /dev/null
@@ -1,24 +0,0 @@
-/*
- * linux/mm/filemap_xip.c
- *
- * Copyright (C) 2005 IBM Corporation
- * Author: Carsten Otte <cotte@de.ibm.com>
- *
- * derived from linux/mm/filemap.c - Copyright (C) Linus Torvalds
- *
- */
-
-#include <linux/fs.h>
-#include <linux/backing-dev.h>
-#include <linux/pagemap.h>
-#include <linux/export.h>
-#include <linux/uio.h>
-#include <linux/rmap.h>
-#include <linux/mmu_notifier.h>
-#include <linux/sched.h>
-#include <linux/seqlock.h>
-#include <linux/mutex.h>
-#include <linux/gfp.h>
-#include <asm/tlbflush.h>
-#include <asm/io.h>
-
diff --git a/mm/madvise.c b/mm/madvise.c
index 1077cbdc8b52..d551475517bf 100644
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -239,7 +239,7 @@ static long madvise_willneed(struct vm_area_struct *vma,
return -EBADF;
#endif
- if (file->f_mapping->a_ops->get_xip_mem) {
+ if (IS_DAX(file_inode(file))) {
/* no bad return value, but ignore advice */
return 0;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.