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CIFS: Request SMB2.1 leases

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if server supports them and we need oplocks.

Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Pavel Shilovsky
2012-09-19 06:22:44 -07:00
committed by Steve French
parent 579f905323
commit b8c32dbb0d
8 changed files with 256 additions and 27 deletions
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21
fs/cifs/smb2ops.c
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@@ -555,6 +555,24 @@ smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
current->tgid, length, offset, type, wait);
}
static void
smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
{
memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
}
static void
smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
{
memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
}
static void
smb2_new_lease_key(struct cifs_fid *fid)
{
get_random_bytes(fid->lease_key, SMB2_LEASE_KEY_SIZE);
}
struct smb_version_operations smb21_operations = {
.compare_fids = smb2_compare_fids,
.setup_request = smb2_setup_request,
@@ -616,6 +634,9 @@ struct smb_version_operations smb21_operations = {
.mand_lock = smb2_mand_lock,
.mand_unlock_range = smb2_unlock_range,
.push_mand_locks = smb2_push_mandatory_locks,
.get_lease_key = smb2_get_lease_key,
.set_lease_key = smb2_set_lease_key,
.new_lease_key = smb2_new_lease_key,
};
struct smb_version_values smb21_values = {