diff options
| author | David S. Miller <davem@davemloft.net> | 2010-04-13 00:28:45 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-04-13 00:28:45 -0700 |
| commit | 9343af084c7e8911897b0883042ee690cee3aaef (patch) | |
| tree | 6211a4bdc84690bec6530d27a3abb19f5e8bb8f3 /fs/cifs/file.c | |
| parent | e182c77cc291456eed127b1472952ddb59a81a9d (diff) | |
| parent | 0d0fb0f9c5fddef4a10242fe3337f00f528a3099 (diff) | |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Conflicts:
lib/Kconfig.debug
Diffstat (limited to 'fs/cifs/file.c')
| -rw-r--r-- | fs/cifs/file.c | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/fs/cifs/file.c b/fs/cifs/file.c index ca2ba7a0193c..9b11a8f56f3a 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -31,6 +31,7 @@ #include <linux/task_io_accounting_ops.h> #include <linux/delay.h> #include <linux/mount.h> +#include <linux/slab.h> #include <asm/div64.h> #include "cifsfs.h" #include "cifspdu.h" @@ -838,8 +839,32 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock) } else { /* if rc == ERR_SHARING_VIOLATION ? */ - rc = 0; /* do not change lock type to unlock - since range in use */ + rc = 0; + + if (lockType & LOCKING_ANDX_SHARED_LOCK) { + pfLock->fl_type = F_WRLCK; + } else { + rc = CIFSSMBLock(xid, tcon, netfid, length, + pfLock->fl_start, 0, 1, + lockType | LOCKING_ANDX_SHARED_LOCK, + 0 /* wait flag */); + if (rc == 0) { + rc = CIFSSMBLock(xid, tcon, netfid, + length, pfLock->fl_start, 1, 0, + lockType | + LOCKING_ANDX_SHARED_LOCK, + 0 /* wait flag */); + pfLock->fl_type = F_RDLCK; + if (rc != 0) + cERROR(1, ("Error unlocking " + "previously locked range %d " + "during test of lock", rc)); + rc = 0; + } else { + pfLock->fl_type = F_WRLCK; + rc = 0; + } + } } FreeXid(xid); |