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| author | Steve French <sfrench@us.ibm.com> | 2007-09-11 05:50:53 +0000 |
|---|---|---|
| committer | Steve French <sfrench@us.ibm.com> | 2007-09-11 05:50:53 +0000 |
| commit | 4efa53f0907bb4378015c129a2c11b8d3a90bce2 (patch) | |
| tree | 030c88b99de6caaf58cee600c5d697460c215b6c /fs/cifs | |
| parent | 15745320f374aa6cbfe4836b76469159c0f49640 (diff) | |
| download | linux-3.10-4efa53f0907bb4378015c129a2c11b8d3a90bce2.tar.gz linux-3.10-4efa53f0907bb4378015c129a2c11b8d3a90bce2.tar.bz2 linux-3.10-4efa53f0907bb4378015c129a2c11b8d3a90bce2.zip | |
[CIFS] lock inode open file list in close in case racing with open
Harmless since it only protected turning off caching for the
inode, but cleaner to lock around this in case we have a close
racing with open.
Signed-off-by: Shaggy <shaggy@us.ibm.com>
CC: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs')
| -rw-r--r-- | fs/cifs/file.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/cifs/file.c b/fs/cifs/file.c index b1807fd1ac4..79254919386 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -545,6 +545,7 @@ int cifs_close(struct inode *inode, struct file *file) } else rc = -EBADF; + read_lock(&GlobalSMBSeslock); if (list_empty(&(CIFS_I(inode)->openFileList))) { cFYI(1, ("closing last open instance for inode %p", inode)); /* if the file is not open we do not know if we can cache info @@ -552,6 +553,7 @@ int cifs_close(struct inode *inode, struct file *file) CIFS_I(inode)->clientCanCacheRead = FALSE; CIFS_I(inode)->clientCanCacheAll = FALSE; } + read_unlock(&GlobalSMBSeslock); if ((rc == 0) && CIFS_I(inode)->write_behind_rc) rc = CIFS_I(inode)->write_behind_rc; FreeXid(xid); |