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| author | Kinglong Mee <kinglongmee@gmail.com> | 2017-02-07 21:50:32 +0800 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2017-02-08 17:02:47 -0500 |
| commit | 8ccc869169d0c59d288b20ec2b060317f87e08b4 (patch) | |
| tree | 12a720592ebbd756f35f0ede7c1d210119c653b0 | |
| parent | 3f373e81b1e8d26a90523cd12385cbce588f3f18 (diff) | |
| download | op-kernel-dev-8ccc869169d0c59d288b20ec2b060317f87e08b4.zip op-kernel-dev-8ccc869169d0c59d288b20ec2b060317f87e08b4.tar.gz | |
sunrpc: use simple_read_from_buffer for reading cache flush
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
| -rw-r--r-- | net/sunrpc/cache.c | 15 |
1 files changed, 3 insertions, 12 deletions
diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c index 9e8561d..2f06f51 100644 --- a/net/sunrpc/cache.c +++ b/net/sunrpc/cache.c @@ -1427,20 +1427,11 @@ static ssize_t read_flush(struct file *file, char __user *buf, struct cache_detail *cd) { char tbuf[22]; - unsigned long p = *ppos; size_t len; - snprintf(tbuf, sizeof(tbuf), "%lu\n", convert_to_wallclock(cd->flush_time)); - len = strlen(tbuf); - if (p >= len) - return 0; - len -= p; - if (len > count) - len = count; - if (copy_to_user(buf, (void*)(tbuf+p), len)) - return -EFAULT; - *ppos += len; - return len; + len = snprintf(tbuf, sizeof(tbuf), "%lu\n", + convert_to_wallclock(cd->flush_time)); + return simple_read_from_buffer(buf, count, ppos, tbuf, len); } static ssize_t write_flush(struct file *file, const char __user *buf, |
