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afs: Make it possible to get the data version in readpage

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Store the data version number indicated by an FS.FetchData op into the read
request structure so that it's accessible by the page reader.

Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells
2018-04-06 14:17:24 +01:00
parent 5800db810a
commit 0c3a5ac281
5 changed files with 59 additions and 44 deletions
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8
fs/afs/inode.c
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@@ -105,7 +105,7 @@ static int afs_inode_map_status(struct afs_vnode *vnode, struct key *key)
/*
* Fetch file status from the volume.
*/
int afs_fetch_status(struct afs_vnode *vnode, struct key *key)
int afs_fetch_status(struct afs_vnode *vnode, struct key *key, bool new_inode)
{
struct afs_fs_cursor fc;
int ret;
@@ -119,7 +119,7 @@ int afs_fetch_status(struct afs_vnode *vnode, struct key *key)
if (afs_begin_vnode_operation(&fc, vnode, key)) {
while (afs_select_fileserver(&fc)) {
fc.cb_break = vnode->cb_break + vnode->cb_s_break;
afs_fs_fetch_file_status(&fc, NULL);
afs_fs_fetch_file_status(&fc, NULL, new_inode);
}
afs_check_for_remote_deletion(&fc, fc.vnode);
@@ -307,7 +307,7 @@ struct inode *afs_iget(struct super_block *sb, struct key *key,
if (!status) {
/* it's a remotely extant inode */
ret = afs_fetch_status(vnode, key);
ret = afs_fetch_status(vnode, key, true);
if (ret < 0)
goto bad_inode;
} else {
@@ -432,7 +432,7 @@ int afs_validate(struct afs_vnode *vnode, struct key *key)
* access */
if (!test_bit(AFS_VNODE_CB_PROMISED, &vnode->flags)) {
_debug("not promised");
ret = afs_fetch_status(vnode, key);
ret = afs_fetch_status(vnode, key, false);
if (ret < 0) {
if (ret == -ENOENT) {
set_bit(AFS_VNODE_DELETED, &vnode->flags);