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net/9p: Adjust maximum MSIZE to account for p9 header 

Add maximum p9 header size to MSIZE to make sure we can
have page aligned data.

Signed-off-by: Eric Van Hensbergen <ericvh@kernel.org>
Reviewed-by: Dominique Martinet <asmadeus@codewreck.org>
This commit is contained in:
Eric Van Hensbergen 2022-11-28 00:38:36 +00:00
parent 88603b6dc4
commit 2a03472262
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GPG Key ID: 88FFD5FB4A5FFF98
1 changed files with 5 additions and 1 deletions
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6
net/9p/client.c
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@ -28,7 +28,11 @@
#define CREATE_TRACE_POINTS
#include <trace/events/9p.h>
#define DEFAULT_MSIZE (128 * 1024)
/* DEFAULT MSIZE = 32 pages worth of payload + P9_HDRSZ +
* room for write (16 extra) or read (11 extra) operands.
*/
#define DEFAULT_MSIZE ((128 * 1024) + P9_IOHDRSZ)
/* Client Option Parsing (code inspired by NFS code)
* - a little lazy - parse all client options