8d0207652c
iter_file_splice_write() - a ->splice_write() instance that gathers the pipe buffers, builds a bio_vec-based iov_iter covering those and feeds it to ->write_iter(). A bunch of simple cases coverted to that... [AV: fixed the braino spotted by Cyrill] Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
81 lines
2.1 KiB
C
81 lines
2.1 KiB
C
/*
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* linux/fs/ext3/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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* ext3 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/quotaops.h>
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#include "ext3.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 ext3_file_open: 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 ext3_release_file (struct inode * inode, struct file * filp)
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{
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if (ext3_test_inode_state(inode, EXT3_STATE_FLUSH_ON_CLOSE)) {
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filemap_flush(inode->i_mapping);
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ext3_clear_inode_state(inode, EXT3_STATE_FLUSH_ON_CLOSE);
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}
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/* if we are the last writer on the inode, drop the block reservation */
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if ((filp->f_mode & FMODE_WRITE) &&
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(atomic_read(&inode->i_writecount) == 1))
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{
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mutex_lock(&EXT3_I(inode)->truncate_mutex);
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ext3_discard_reservation(inode);
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mutex_unlock(&EXT3_I(inode)->truncate_mutex);
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}
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if (is_dx(inode) && filp->private_data)
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ext3_htree_free_dir_info(filp->private_data);
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return 0;
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}
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const struct file_operations ext3_file_operations = {
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.llseek = generic_file_llseek,
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.read = new_sync_read,
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.write = new_sync_write,
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.read_iter = generic_file_read_iter,
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.write_iter = generic_file_write_iter,
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.unlocked_ioctl = ext3_ioctl,
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#ifdef CONFIG_COMPAT
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.compat_ioctl = ext3_compat_ioctl,
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#endif
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.mmap = generic_file_mmap,
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.open = dquot_file_open,
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.release = ext3_release_file,
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.fsync = ext3_sync_file,
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.splice_read = generic_file_splice_read,
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.splice_write = iter_file_splice_write,
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};
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const struct inode_operations ext3_file_inode_operations = {
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.setattr = ext3_setattr,
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#ifdef CONFIG_EXT3_FS_XATTR
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.setxattr = generic_setxattr,
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.getxattr = generic_getxattr,
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.listxattr = ext3_listxattr,
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.removexattr = generic_removexattr,
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#endif
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.get_acl = ext3_get_acl,
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.set_acl = ext3_set_acl,
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.fiemap = ext3_fiemap,
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};
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