diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-04-08 11:58:14 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-04-08 11:58:14 -0700 |
| commit | 9ddd3a31aedcdb55d5509b595c04b187041c8adb (patch) | |
| tree | 210582aade8b4342b2abfbc3682dd2014456d23b /fs/cifs/file.c | |
| parent | d620a7cf05d4f12f5bbb1060d766e8139ab31458 (diff) | |
| parent | f05337c6ac48d19d354e0640a8eb8fc884f82bcc (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
not overwriting file_lock structure after GET_LK
cifs: Fix a kernel BUG with remote OS/2 server (try #3)
[CIFS] initialize nbytes at the beginning of CIFSSMBWrite()
[CIFS] Add mmap for direct, nobrl cifs mount types
Diffstat (limited to 'fs/cifs/file.c')
| -rw-r--r-- | fs/cifs/file.c | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 058b390d3da8..9b11a8f56f3a 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -839,8 +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); |