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| author | Jens Axboe <jens.axboe@oracle.com> | 2010-04-13 20:03:21 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2010-04-13 20:03:21 +0200 |
| commit | 4facdaec1ce186e731e6baa04f074804849e9a49 (patch) | |
| tree | e521fba8386bf23533cfe21ea5200e615960ec07 /fs/cifs/file.c | |
| parent | a11cdaa7af56423a921a8bdad8f5a5f4ddca918a (diff) | |
| parent | 0d0fb0f9c5fddef4a10242fe3337f00f528a3099 (diff) | |
| download | op-kernel-dev-4facdaec1ce186e731e6baa04f074804849e9a49.zip op-kernel-dev-4facdaec1ce186e731e6baa04f074804849e9a49.tar.gz | |
Merge branch 'master' into for-2.6.35
Conflicts:
block/blk-cgroup.c
block/cfq-iosched.c
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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 ca2ba7a..9b11a8f 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); |
