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orangefs: simplify orangefs_inode_getattr interface

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No need to store the received mask.  It is either STATX_BASIC_STATS or
STATX_BASIC_STATS & ~STATX_SIZE.  If STATX_SIZE is requested, the cache
is bypassed anyway, so the cached mask is unnecessary to decide whether
to do a real getattr.

This is a change.  Previously a getattr would want size and use the
cached size.  All of the in-kernel callers that wanted size did not want
a cached size.  Now a getattr cannot use the cached size if it wants
size at all.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
This commit is contained in:
Martin Brandenburg 2018-02-07 18:44:50 +00:00 • committed by Mike Marshall
parent 66d5477d70
commit 8b60785c1d
4 changed files with 28 additions and 38 deletions
Download patch file Download diff file Expand all files Collapse all files

31
fs/orangefs/orangefs-utils.c
View file

@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
/*
* (C) 2001 Clemson University and The University of Chicago
* Copyright 2018 Omnibond Systems, L.L.C.
*
* See COPYING in top-level directory.
*/
@ -272,8 +273,7 @@ static int orangefs_inode_is_stale(struct inode *inode,
return 0;
}
int orangefs_inode_getattr(struct inode *inode, int new, int bypass,
u32 request_mask)
int orangefs_inode_getattr(struct inode *inode, int flags)
{
struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
struct orangefs_kernel_op_s *new_op;
@ -283,16 +283,9 @@ int orangefs_inode_getattr(struct inode *inode, int new, int bypass,
gossip_debug(GOSSIP_UTILS_DEBUG, "%s: called on inode %pU\n", __func__,
get_khandle_from_ino(inode));
if (!new && !bypass) {
/*
* Must have all the attributes in the mask and be within cache
* time.
*/
if ((request_mask & orangefs_inode->getattr_mask) ==
request_mask &&
time_before(jiffies, orangefs_inode->getattr_time))
return 0;
}
/* Must have all the attributes in the mask and be within cache time. */
if (!flags && time_before(jiffies, orangefs_inode->getattr_time))
return 0;
new_op = op_alloc(ORANGEFS_VFS_OP_GETATTR);
if (!new_op)
@ -302,7 +295,7 @@ int orangefs_inode_getattr(struct inode *inode, int new, int bypass,
* Size is the hardest attribute to get. The incremental cost of any
* other attribute is essentially zero.
*/
if (request_mask & STATX_SIZE || new)
if (flags)
new_op->upcall.req.getattr.mask = ORANGEFS_ATTR_SYS_ALL_NOHINT;
else
new_op->upcall.req.getattr.mask =
@ -313,7 +306,7 @@ int orangefs_inode_getattr(struct inode *inode, int new, int bypass,
if (ret != 0)
goto out;
if (!new) {
if (!(flags & ORANGEFS_GETATTR_NEW)) {
ret = orangefs_inode_is_stale(inode,
&new_op->downcall.resp.getattr.attributes,
new_op->downcall.resp.getattr.link_target);
@ -329,7 +322,7 @@ int orangefs_inode_getattr(struct inode *inode, int new, int bypass,
case S_IFREG:
inode->i_flags = orangefs_inode_flags(&new_op->
downcall.resp.getattr.attributes);
if (request_mask & STATX_SIZE || new) {
if (flags) {
inode_size = (loff_t)new_op->
downcall.resp.getattr.attributes.size;
inode->i_size = inode_size;
@ -343,7 +336,7 @@ int orangefs_inode_getattr(struct inode *inode, int new, int bypass,
}
break;
case S_IFDIR:
if (request_mask & STATX_SIZE || new) {
if (flags) {
inode->i_size = PAGE_SIZE;
spin_lock(&inode->i_lock);
inode_set_bytes(inode, inode->i_size);
@ -352,7 +345,7 @@ int orangefs_inode_getattr(struct inode *inode, int new, int bypass,
set_nlink(inode, 1);
break;
case S_IFLNK:
if (new) {
if (flags & ORANGEFS_GETATTR_NEW) {
inode->i_size = (loff_t)strlen(new_op->
downcall.resp.getattr.link_target);
ret = strscpy(orangefs_inode->link_target,
@ -393,10 +386,6 @@ int orangefs_inode_getattr(struct inode *inode, int new, int bypass,
orangefs_inode->getattr_time = jiffies +
orangefs_getattr_timeout_msecs*HZ/1000;
if (request_mask & STATX_SIZE || new)
orangefs_inode->getattr_mask = STATX_BASIC_STATS;
else
orangefs_inode->getattr_mask = STATX_BASIC_STATS & ~STATX_SIZE;
ret = 0;
out:
op_release(new_op);