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orangefs: Cache getattr results.

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The userspace component attempts to do this, but this will prevent
us from even needing to go into userspace to satisfy certain getattr
requests.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
This commit is contained in:
Martin Brandenburg
2016-06-09 16:32:38 -04:00
parent 31b7c1ab4e
commit 71680c18c8
5 changed files with 34 additions and 29 deletions
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38
fs/orangefs/orangefs-utils.c
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@@ -251,7 +251,7 @@ static int orangefs_inode_is_stale(struct inode *inode, int new,
return 0;
}
int orangefs_inode_getattr(struct inode *inode, int new, int size)
int orangefs_inode_getattr(struct inode *inode, int new, int bypass)
{
struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
struct orangefs_kernel_op_s *new_op;
@@ -261,12 +261,16 @@ int orangefs_inode_getattr(struct inode *inode, int new, int size)
gossip_debug(GOSSIP_UTILS_DEBUG, "%s: called on inode %pU\n", __func__,
get_khandle_from_ino(inode));
if (!new && !bypass) {
if (orangefs_inode->getattr_time > jiffies)
return 0;
}
new_op = op_alloc(ORANGEFS_VFS_OP_GETATTR);
if (!new_op)
return -ENOMEM;
new_op->upcall.req.getattr.refn = orangefs_inode->refn;
new_op->upcall.req.getattr.mask = size ?
ORANGEFS_ATTR_SYS_ALL_NOHINT : ORANGEFS_ATTR_SYS_ALL_NOHINT_NOSIZE;
new_op->upcall.req.getattr.mask = ORANGEFS_ATTR_SYS_ALL_NOHINT;
ret = service_operation(new_op, __func__,
get_interruptible_flag(inode));
@@ -287,20 +291,18 @@ int orangefs_inode_getattr(struct inode *inode, int new, int size)
case S_IFREG:
inode->i_flags = orangefs_inode_flags(&new_op->
downcall.resp.getattr.attributes);
if (size) {
inode_size = (loff_t)new_op->
downcall.resp.getattr.attributes.size;
rounded_up_size =
(inode_size + (4096 - (inode_size % 4096)));
inode->i_size = inode_size;
orangefs_inode->blksize =
new_op->downcall.resp.getattr.attributes.blksize;
spin_lock(&inode->i_lock);
inode->i_bytes = inode_size;
inode->i_blocks =
(unsigned long)(rounded_up_size / 512);
spin_unlock(&inode->i_lock);
}
inode_size = (loff_t)new_op->
downcall.resp.getattr.attributes.size;
rounded_up_size =
(inode_size + (4096 - (inode_size % 4096)));
inode->i_size = inode_size;
orangefs_inode->blksize =
new_op->downcall.resp.getattr.attributes.blksize;
spin_lock(&inode->i_lock);
inode->i_bytes = inode_size;
inode->i_blocks =
(unsigned long)(rounded_up_size / 512);
spin_unlock(&inode->i_lock);
break;
case S_IFDIR:
inode->i_size = PAGE_SIZE;
@@ -345,6 +347,7 @@ int orangefs_inode_getattr(struct inode *inode, int new, int size)
inode->i_mode = type | (is_root_handle(inode) ? S_ISVTX : 0) |
orangefs_inode_perms(&new_op->downcall.resp.getattr.attributes);
orangefs_inode->getattr_time = jiffies + HZ;
ret = 0;
out:
op_release(new_op);
@@ -418,6 +421,7 @@ int orangefs_inode_setattr(struct inode *inode, struct iattr *iattr)
ClearMtimeFlag(orangefs_inode);
ClearCtimeFlag(orangefs_inode);
ClearModeFlag(orangefs_inode);
orangefs_inode->getattr_time = 0;
}
return ret;