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2cb1e08985
Replace pointers to generic_file_splice_read() with calls to filemap_splice_read(). Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Christian Brauner <brauner@kernel.org> cc: Jens Axboe <axboe@kernel.dk> cc: Al Viro <viro@zeniv.linux.org.uk> cc: David Hildenbrand <david@redhat.com> cc: John Hubbard <jhubbard@nvidia.com> cc: linux-mm@kvack.org cc: linux-block@vger.kernel.org cc: linux-fsdevel@vger.kernel.org Link: https://lore.kernel.org/r/20230522135018.2742245-29-dhowells@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
55 lines
1.5 KiB
C
55 lines
1.5 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 current->mm->get_unmapped_area(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 = generic_file_mmap,
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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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