From: Chandan Rajendra <chandan@linux.vnet.ibm.com>
To: fstests@vger.kernel.org
Cc: Chandan Rajendra <chandan@linux.vnet.ibm.com>, guaneryu@gmail.com
Subject: [PATCH] src/t_stripealign.c: Use block size reported by fstatfs()
Date: Wed, 21 Nov 2018 21:56:46 +0530 [thread overview]
Message-ID: <20181121162646.18117-1-chandan@linux.vnet.ibm.com> (raw)
On ppc64le, block size reported by fstat(2) is 64k (the page size)
i.e. the "preferred I/O size". However src/t_stripealign.c requires the
actual block size of the filesystem. Hence this commit now makes use of
the block size reported by fstatfs(2) syscall.
Signed-off-by: Chandan Rajendra <chandan@linux.vnet.ibm.com>
---
src/t_stripealign.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/src/t_stripealign.c b/src/t_stripealign.c
index c61e7632..5cdadaae 100644
--- a/src/t_stripealign.c
+++ b/src/t_stripealign.c
@@ -7,7 +7,7 @@
#include <unistd.h>
#include <stdlib.h>
#include <sys/types.h>
-#include <sys/stat.h>
+#include <sys/vfs.h>
#include <fcntl.h>
#include <stdio.h>
#include <sys/ioctl.h>
@@ -31,7 +31,7 @@
int main(int argc, char ** argv)
{
- struct stat sb;
+ struct statfs sb;
struct fiemap *fie;
struct fiemap_extent *fe;
int fd;
@@ -54,7 +54,7 @@ int main(int argc, char ** argv)
return 1;
}
- ret = fstat(fd, &sb);
+ ret = fstatfs(fd, &sb);
if (ret) {
perror(filename);
close(fd);
@@ -101,7 +101,7 @@ int main(int argc, char ** argv)
return 1;
}
- block = fie->fm_extents[0].fe_physical / sb.st_blksize;
+ block = fie->fm_extents[0].fe_physical / sb.f_bsize;
check:
if (block % sunit) {
printf("%s: Start block %llu not multiple of sunit %u\n",
--
2.19.1
next reply other threads:[~2018-11-22 3:02 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-21 16:26 Chandan Rajendra [this message]
2018-11-23 6:20 ` [PATCH] src/t_stripealign.c: Use block size reported by fstatfs() Eryu Guan
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20181121162646.18117-1-chandan@linux.vnet.ibm.com \
--to=chandan@linux.vnet.ibm.com \
--cc=fstests@vger.kernel.org \
--cc=guaneryu@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.