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[PATCH] cifs: Do not use large smb buffers in response path

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unless response is larger than 256 bytes.  This cuts more than 1/3 of
the large memory allocations that cifs does and should be a huge help to
memory pressure under stress. 

Signed-off-by: Steve French (sfrench@us.ibm.com)
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Steve French
2005-04-28 22:41:07 -07:00
committed by Linus Torvalds
parent c81156dd21
commit b8643e1b52
3 changed files with 65 additions and 33 deletions
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11
fs/cifs/cifs_debug.c
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@@ -1,7 +1,7 @@
/*
* fs/cifs_debug.c
*
* Copyright (C) International Business Machines Corp., 2000,2003
* Copyright (C) International Business Machines Corp., 2000,2005
*
* Modified by Steve French (sfrench@us.ibm.com)
*
@@ -92,8 +92,10 @@ cifs_debug_data_read(char *buf, char **beginBuffer, off_t offset,
length =
sprintf(buf,
"\n%d) Name: %s Domain: %s Mounts: %d ServerOS: %s \n\tServerNOS: %s\tCapabilities: 0x%x\n\tSMB session status: %d\t",
i, ses->serverName, ses->serverDomain, atomic_read(&ses->inUse),
ses->serverOS, ses->serverNOS, ses->capabilities,ses->status);
i, ses->serverName, ses->serverDomain,
atomic_read(&ses->inUse),
ses->serverOS, ses->serverNOS,
ses->capabilities,ses->status);
buf += length;
if(ses->server) {
buf += sprintf(buf, "TCP status: %d\n\tLocal Users To Server: %d SecMode: 0x%x Req Active: %d",
@@ -207,7 +209,8 @@ cifs_stats_read(char *buf, char **beginBuffer, off_t offset,
buf += item_length;
item_length =
sprintf(buf,"SMB Request/Response Buffer: %d Pool size: %d\n",
bufAllocCount.counter,cifs_min_rcv + tcpSesAllocCount.counter);
bufAllocCount.counter,
cifs_min_rcv + tcpSesAllocCount.counter);
length += item_length;
buf += item_length;
item_length =