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authorSteve French <sfrench@us.ibm.com>2005-12-12 20:53:18 -0800
committerSteve French <sfrench@us.ibm.com>2005-12-12 20:53:18 -0800
commitec637e3ffb6b978143652477c7c5f96c9519b691 (patch)
tree32533b8f101e1d85b3499050eef29e78480e5cae /fs/cifs/cifspdu.h
parentc89a86bb96307019867d11874ef0b86adaa0598e (diff)
downloadop-kernel-dev-ec637e3ffb6b978143652477c7c5f96c9519b691.zip
op-kernel-dev-ec637e3ffb6b978143652477c7c5f96c9519b691.tar.gz
[CIFS] Avoid extra large buffer allocation (and memcpy) in cifs_readpages
Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs/cifspdu.h')
-rw-r--r--fs/cifs/cifspdu.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/cifs/cifspdu.h b/fs/cifs/cifspdu.h
index 5253e77..3c09fb9 100644
--- a/fs/cifs/cifspdu.h
+++ b/fs/cifs/cifspdu.h
@@ -80,7 +80,11 @@
#define NT_TRANSACT_GET_USER_QUOTA 0x07
#define NT_TRANSACT_SET_USER_QUOTA 0x08
-#define MAX_CIFS_HDR_SIZE 256 /* is future chained NTCreateXReadX bigger? */
+#define MAX_CIFS_SMALL_BUFFER_SIZE 448 /* big enough for most */
+/* future chained NTCreateXReadX bigger, but for time being NTCreateX biggest */
+/* among the requests (NTCreateX response is bigger with wct of 34) */
+#define MAX_CIFS_HDR_SIZE 0x58 /* 4 len + 32 hdr + (2*24 wct) + 2 bct + 2 pad */
+#define CIFS_SMALL_PATH 120 /* allows for (448-88)/3 */
/* internal cifs vfs structures */
/*****************************************************************
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