diff options
| author |   NeilBrown <neilb@suse.de> | 2006-10-04 02:15:47 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-04 07:55:15 -0700 |
| commit | 3cc03b164cf01c6f36e64720b58610d292fb26f7 (patch) | |
| tree | b558e11a087945ad5b9a1a25483aa2acc8d93fbb /include/linux/nfsd/xdr.h | |
| parent | [PATCH] knfsd: Replace two page lists in struct svc_rqst with one (diff) | |
| download | linux-dev-3cc03b164cf01c6f36e64720b58610d292fb26f7.tar.xz linux-dev-3cc03b164cf01c6f36e64720b58610d292fb26f7.zip | |
[PATCH] knfsd: Avoid excess stack usage in svc_tcp_recvfrom
.. by allocating the array of 'kvec' in 'struct svc_rqst'.
As we plan to increase RPCSVC_MAXPAGES from 8 upto 256, we can no longer
allocate an array of this size on the stack. So we allocate it in 'struct
svc_rqst'.
However svc_rqst contains (indirectly) an array of the same type and size
(actually several, but they are in a union). So rather than waste space, we
move those arrays out of the separately allocated union and into svc_rqst to
share with the kvec moved out of svc_tcp_recvfrom (various arrays are used at
different times, so there is no conflict).
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/nfsd/xdr.h')
| -rw-r--r-- | include/linux/nfsd/xdr.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/include/linux/nfsd/xdr.h b/include/linux/nfsd/xdr.h index a38f9d776de9..0e53de87d886 100644 --- a/include/linux/nfsd/xdr.h +++ b/include/linux/nfsd/xdr.h @@ -30,7 +30,6 @@ struct nfsd_readargs { struct svc_fh fh; __u32 offset; __u32 count; - struct kvec vec[RPCSVC_MAXPAGES]; int vlen; }; @@ -38,7 +37,6 @@ struct nfsd_writeargs { svc_fh fh; __u32 offset; int len; - struct kvec vec[RPCSVC_MAXPAGES]; int vlen; }; |