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| author | David S. Miller <davem@davemloft.net> | 2012-03-29 14:38:27 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-03-29 14:38:27 -0700 |
| commit | 20fde227388fb0c2857ff1793754056b833697fe (patch) | |
| tree | 182b6e20e1d713ecd91332cf5c5d3a6ecee3269d | |
| parent | 984a42374ce2055836f580c2240306171757ea72 (diff) | |
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Remove xsputn small copy optimization.
* libio/fileops.c (_IO_new_file_xsputn): Don't try to optimize
small copies by hand.
| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | libio/fileops.c | 19 |
2 files changed, 9 insertions, 15 deletions
@@ -1,3 +1,8 @@ +2012-03-29 David S. Miller <davem@davemloft.net> + + * libio/fileops.c (_IO_new_file_xsputn): Don't try to optimize + small copies by hand. + 2012-03-28 Siddhesh Poyarekar <siddhesh@redhat.com> [BZ #13761] diff --git a/libio/fileops.c b/libio/fileops.c index 95e09b4400..a2e8dacd77 100644 --- a/libio/fileops.c +++ b/libio/fileops.c @@ -1341,24 +1341,13 @@ _IO_new_file_xsputn (f, data, n) { if (count > to_do) count = to_do; - if (count > 20) - { #ifdef _LIBC - f->_IO_write_ptr = __mempcpy (f->_IO_write_ptr, s, count); + f->_IO_write_ptr = __mempcpy (f->_IO_write_ptr, s, count); #else - memcpy (f->_IO_write_ptr, s, count); - f->_IO_write_ptr += count; + memcpy (f->_IO_write_ptr, s, count); + f->_IO_write_ptr += count; #endif - s += count; - } - else - { - register char *p = f->_IO_write_ptr; - register int i = (int) count; - while (--i >= 0) - *p++ = *s++; - f->_IO_write_ptr = p; - } + s += count; to_do -= count; } if (to_do + must_flush > 0) |