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Proper mask lock mode for vg lock.

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Lock mode is int masked by LCK_TYPE_MASK, always.

Patch also remove uneccessary masking lock flag on sender side,
if masking is needed, it is don on client side already.
This commit is contained in:
Milan Broz 2010-01-05 16:07:56 +00:00
parent d37be0b865
commit c9118a1d20
3 changed files with 7 additions and 7 deletions
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1
WHATS_NEW
View File

@ -1,5 +1,6 @@
Version 2.02.57 -
====================================
Use proper mask for VG lock mode in clvmd.
Add possibility to drop precommitted metadata in lvmcache.
Move processing of VG locks to separate function in clvmd.
Properly decode flags even for VG locks.

12
daemons/clvmd/clvmd-command.c
View File

@ -193,6 +193,7 @@ static int lock_vg(struct local_client *client)
(struct clvm_header *) client->bits.localsock.cmd;
unsigned char lock_cmd;
unsigned char lock_flags;
int lock_mode;
char *args = header->node + strlen(header->node) + 1;
int lkid;
int status = 0;
@ -212,11 +213,12 @@ static int lock_vg(struct local_client *client)
}
lock_cmd = args[0] & (LCK_NONBLOCK | LCK_HOLD | LCK_SCOPE_MASK | LCK_TYPE_MASK);
lock_mode = ((int)lock_cmd & LCK_TYPE_MASK);
lock_flags = args[1];
lockname = &args[2];
DEBUGLOG("doing PRE command LOCK_VG '%s' at %x (client=%p)\n", lockname, lock_cmd, client);
if (lock_cmd == LCK_UNLOCK) {
if (lock_mode == LCK_UNLOCK) {
lkid = (int)(long)dm_hash_lookup(lock_hash, lockname);
if (lkid == 0)
@ -230,11 +232,9 @@ static int lock_vg(struct local_client *client)
}
else {
/* Read locks need to be PR; other modes get passed through */
if ((lock_cmd & LCK_TYPE_MASK) == LCK_READ) {
lock_cmd &= ~LCK_TYPE_MASK;
lock_cmd |= LCK_PREAD;
}
status = sync_lock(lockname, (int)lock_cmd, (lock_cmd & LCK_NONBLOCK) ? LKF_NOQUEUE : 0, &lkid);
if (lock_mode == LCK_READ)
lock_mode = LCK_PREAD;
status = sync_lock(lockname, lock_mode, (lock_cmd & LCK_NONBLOCK) ? LKF_NOQUEUE : 0, &lkid);
if (status)
status = errno;
else

1
lib/locking/cluster_locking.c
View File

@ -409,7 +409,6 @@ int lock_resource(struct cmd_context *cmd, const char *resource, uint32_t flags)
lock_scope = "VG";
clvmd_cmd = CLVMD_CMD_LOCK_VG;
flags &= LCK_TYPE_MASK;
break;
case LCK_LV: