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[CIFS] Avoid extra large buffer allocation (and memcpy) in cifs_readpages

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Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Steve French
2005-12-12 20:53:18 -08:00
parent c89a86bb96
commit ec637e3ffb
11 changed files with 156 additions and 108 deletions
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39
fs/cifs/cifs_debug.c
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@@ -401,8 +401,8 @@ static read_proc_t ntlmv2_enabled_read;
static write_proc_t ntlmv2_enabled_write;
static read_proc_t packet_signing_enabled_read;
static write_proc_t packet_signing_enabled_write;
static read_proc_t quotaEnabled_read;
static write_proc_t quotaEnabled_write;
static read_proc_t experimEnabled_read;
static write_proc_t experimEnabled_write;
static read_proc_t linuxExtensionsEnabled_read;
static write_proc_t linuxExtensionsEnabled_write;
@@ -442,9 +442,9 @@ cifs_proc_init(void)
pde->write_proc = oplockEnabled_write;
pde = create_proc_read_entry("Experimental", 0, proc_fs_cifs,
quotaEnabled_read, NULL);
experimEnabled_read, NULL);
if (pde)
pde->write_proc = quotaEnabled_write;
pde->write_proc = experimEnabled_write;
pde = create_proc_read_entry("LinuxExtensionsEnabled", 0, proc_fs_cifs,
linuxExtensionsEnabled_read, NULL);
@@ -586,14 +586,13 @@ oplockEnabled_write(struct file *file, const char __user *buffer,
}
static int
quotaEnabled_read(char *page, char **start, off_t off,
experimEnabled_read(char *page, char **start, off_t off,
int count, int *eof, void *data)
{
int len;
len = sprintf(page, "%d\n", experimEnabled);
/* could also check if quotas are enabled in kernel
as a whole first */
len -= off;
*start = page + off;
@@ -608,21 +607,23 @@ quotaEnabled_read(char *page, char **start, off_t off,
return len;
}
static int
quotaEnabled_write(struct file *file, const char __user *buffer,
experimEnabled_write(struct file *file, const char __user *buffer,
unsigned long count, void *data)
{
char c;
int rc;
char c;
int rc;
rc = get_user(c, buffer);
if (rc)
return rc;
if (c == '0' || c == 'n' || c == 'N')
experimEnabled = 0;
else if (c == '1' || c == 'y' || c == 'Y')
experimEnabled = 1;
rc = get_user(c, buffer);
if (rc)
return rc;
if (c == '0' || c == 'n' || c == 'N')
experimEnabled = 0;
else if (c == '1' || c == 'y' || c == 'Y')
experimEnabled = 1;
else if (c == '2')
experimEnabled = 2;
return count;
return count;
}
static int
@@ -632,8 +633,6 @@ linuxExtensionsEnabled_read(char *page, char **start, off_t off,
int len;
len = sprintf(page, "%d\n", linuxExtEnabled);
/* could also check if quotas are enabled in kernel
as a whole first */
len -= off;
*start = page + off;