Revision 963ad94853000ab100f5ff19eea80095660d41b4 authored by Nikolay Aleksandrov on 22 July 2015, 11:03:40 UTC, committed by David S. Miller on 26 July 2015, 23:27:22 UTC
Since slave_changelink support was added there have been a few race conditions when using br_setport() since some of the port functions it uses require the bridge lock. It is very easy to trigger a lockup due to some internal spin_lock() usage without bh disabled, also it's possible to get the bridge into an inconsistent state. Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Fixes: 3ac636b8591c ("bridge: implement rtnl_link_ops->slave_changelink") Reviewed-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
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file.c
/*
* linux/fs/sysv/file.c
*
* minix/file.c
* Copyright (C) 1991, 1992 Linus Torvalds
*
* coh/file.c
* Copyright (C) 1993 Pascal Haible, Bruno Haible
*
* sysv/file.c
* Copyright (C) 1993 Bruno Haible
*
* SystemV/Coherent regular file handling primitives
*/
#include "sysv.h"
/*
* We have mostly NULLs here: the current defaults are OK for
* the coh filesystem.
*/
const struct file_operations sysv_file_operations = {
.llseek = generic_file_llseek,
.read_iter = generic_file_read_iter,
.write_iter = generic_file_write_iter,
.mmap = generic_file_mmap,
.fsync = generic_file_fsync,
.splice_read = generic_file_splice_read,
};
static int sysv_setattr(struct dentry *dentry, struct iattr *attr)
{
struct inode *inode = d_inode(dentry);
int error;
error = inode_change_ok(inode, attr);
if (error)
return error;
if ((attr->ia_valid & ATTR_SIZE) &&
attr->ia_size != i_size_read(inode)) {
error = inode_newsize_ok(inode, attr->ia_size);
if (error)
return error;
truncate_setsize(inode, attr->ia_size);
sysv_truncate(inode);
}
setattr_copy(inode, attr);
mark_inode_dirty(inode);
return 0;
}
const struct inode_operations sysv_file_inode_operations = {
.setattr = sysv_setattr,
.getattr = sysv_getattr,
};
Computing file changes ...