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951ea2f484
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().
We have provided generic .mmap_prepare() equivalents, so update all file
systems that specify these directly in their file_operations structures.
This updates 9p, adfs, affs, bfs, fat, hfs, hfsplus, hostfs, hpfs, jffs2,
jfs, minix, omfs, ramfs and ufs file systems directly.
It updates generic_ro_fops which impacts qnx4, cramfs, befs, squashfs,
frebxfs, qnx6, efs, romfs, erofs and isofs file systems.
There are remaining file systems which use generic hooks in a less direct
way which we address in a subsequent commit.
Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Link: https://lore.kernel.org/c7dc90e44a9e75e750939ea369290d6e441a18e6.1750099179.git.lorenzo.stoakes@oracle.com
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Viacheslav Dubeyko <Slava.Dubeyko@ibm.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
/* file-mmu.c: ramfs MMU-based file operations
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*
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* Resizable simple ram filesystem for Linux.
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*
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* Copyright (C) 2000 Linus Torvalds.
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* 2000 Transmeta Corp.
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*
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* Usage limits added by David Gibson, Linuxcare Australia.
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* This file is released under the GPL.
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*/
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/*
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* NOTE! This filesystem is probably most useful
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* not as a real filesystem, but as an example of
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* how virtual filesystems can be written.
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*
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* It doesn't get much simpler than this. Consider
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* that this file implements the full semantics of
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* a POSIX-compliant read-write filesystem.
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*
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* Note in particular how the filesystem does not
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* need to implement any data structures of its own
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* to keep track of the virtual data: using the VFS
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* caches is sufficient.
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*/
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#include <linux/fs.h>
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#include <linux/mm.h>
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#include <linux/ramfs.h>
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#include <linux/sched.h>
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#include "internal.h"
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static unsigned long ramfs_mmu_get_unmapped_area(struct file *file,
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unsigned long addr, unsigned long len, unsigned long pgoff,
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unsigned long flags)
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{
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return mm_get_unmapped_area(current->mm, file, addr, len, pgoff, flags);
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}
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const struct file_operations ramfs_file_operations = {
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.read_iter = generic_file_read_iter,
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.write_iter = generic_file_write_iter,
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.mmap_prepare = generic_file_mmap_prepare,
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.fsync = noop_fsync,
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.splice_read = filemap_splice_read,
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.splice_write = iter_file_splice_write,
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.llseek = generic_file_llseek,
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.get_unmapped_area = ramfs_mmu_get_unmapped_area,
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};
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const struct inode_operations ramfs_file_inode_operations = {
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.setattr = simple_setattr,
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.getattr = simple_getattr,
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};
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