eb6fe0c388
This patch reworks filemap_xip.c with the goal to reduce code duplication from mm/filemap.c. It applies agains 2.6.12-rc6-mm1. Instead of implementing the aio functions, this one implements the synchronous read/write functions only. For readv and writev, the generic fallback is used. For aio, we rely on the application doing the fallback. Since our "synchronous" function does memcpy immediately anyway, there is no performance difference between using the fallbacks or implementing each operation. Signed-off-by: Carsten Otte <cotte@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
83 lines
2 KiB
C
83 lines
2 KiB
C
/*
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* linux/fs/ext2/file.c
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*
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* Copyright (C) 1992, 1993, 1994, 1995
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* Remy Card (card@masi.ibp.fr)
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* Laboratoire MASI - Institut Blaise Pascal
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* Universite Pierre et Marie Curie (Paris VI)
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*
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* from
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*
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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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* ext2 fs regular file handling primitives
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*
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* 64-bit file support on 64-bit platforms by Jakub Jelinek
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* (jj@sunsite.ms.mff.cuni.cz)
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*/
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#include <linux/time.h>
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#include "ext2.h"
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#include "xattr.h"
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#include "acl.h"
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/*
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* Called when an inode is released. Note that this is different
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* from ext2_open_file: open gets called at every open, but release
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* gets called only when /all/ the files are closed.
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*/
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static int ext2_release_file (struct inode * inode, struct file * filp)
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{
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if (filp->f_mode & FMODE_WRITE)
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ext2_discard_prealloc (inode);
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return 0;
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}
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/*
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* We have mostly NULL's here: the current defaults are ok for
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* the ext2 filesystem.
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*/
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struct file_operations ext2_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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.aio_read = generic_file_aio_read,
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.aio_write = generic_file_aio_write,
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.ioctl = ext2_ioctl,
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.mmap = generic_file_mmap,
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.open = generic_file_open,
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.release = ext2_release_file,
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.fsync = ext2_sync_file,
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.readv = generic_file_readv,
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.writev = generic_file_writev,
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.sendfile = generic_file_sendfile,
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};
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#ifdef CONFIG_EXT2_FS_XIP
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struct file_operations ext2_xip_file_operations = {
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.llseek = generic_file_llseek,
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.read = xip_file_read,
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.write = xip_file_write,
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.ioctl = ext2_ioctl,
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.mmap = xip_file_mmap,
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.open = generic_file_open,
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.release = ext2_release_file,
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.fsync = ext2_sync_file,
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.sendfile = xip_file_sendfile,
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};
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#endif
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struct inode_operations ext2_file_inode_operations = {
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.truncate = ext2_truncate,
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#ifdef CONFIG_EXT2_FS_XATTR
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.setxattr = generic_setxattr,
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.getxattr = generic_getxattr,
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.listxattr = ext2_listxattr,
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.removexattr = generic_removexattr,
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#endif
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.setattr = ext2_setattr,
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.permission = ext2_permission,
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};
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