4b6f5d20b0
This is a conversion to make the various file_operations structs in fs/ const. Basically a regexp job, with a few manual fixups The goal is both to increase correctness (harder to accidentally write to shared datastructures) and reducing the false sharing of cachelines with things that get dirty in .data (while .rodata is nicely read only and thus cache clean) Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
/*
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* linux/fs/minix/file.c
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*
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* Copyright (C) 1991, 1992 Linus Torvalds
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*
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* minix regular file handling primitives
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*/
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#include <linux/buffer_head.h> /* for fsync_inode_buffers() */
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#include "minix.h"
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/*
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* We have mostly NULLs here: the current defaults are OK for
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* the minix filesystem.
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*/
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int minix_sync_file(struct file *, struct dentry *, int);
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const struct file_operations minix_file_operations = {
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.llseek = generic_file_llseek,
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.read = generic_file_read,
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.write = generic_file_write,
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.mmap = generic_file_mmap,
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.fsync = minix_sync_file,
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.sendfile = generic_file_sendfile,
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};
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struct inode_operations minix_file_inode_operations = {
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.truncate = minix_truncate,
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.getattr = minix_getattr,
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};
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int minix_sync_file(struct file * file, struct dentry *dentry, int datasync)
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{
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struct inode *inode = dentry->d_inode;
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int err;
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err = sync_mapping_buffers(inode->i_mapping);
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if (!(inode->i_state & I_DIRTY))
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return err;
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if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
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return err;
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err |= minix_sync_inode(inode);
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return err ? -EIO : 0;
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}
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