From: Andreas Gruenbacher <agruenba@redhat.com>
To: cluster-devel.redhat.com
Subject: [Cluster-devel] [PATCH] gfs: Get rid of unnucessary locking in inode_go_dump
Date: Tue, 27 Jun 2023 15:40:08 +0200 [thread overview]
Message-ID: <20230627134008.2625442-1-agruenba@redhat.com> (raw)
Commit 27a2660f1ef9 ("gfs2: Dump nrpages for inodes and their glocks")
added some locking around reading inode->i_data.nrpages. That locking
doesn't do anything really, so get rid of it.
With that, the glock argument to ->go_dump() can be made const again as
well.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
---
fs/gfs2/glops.c | 17 ++++++-----------
fs/gfs2/incore.h | 2 +-
2 files changed, 7 insertions(+), 12 deletions(-)
diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c
index 7c48c7afd6a4..54319328b16b 100644
--- a/fs/gfs2/glops.c
+++ b/fs/gfs2/glops.c
@@ -236,7 +236,7 @@ static void rgrp_go_inval(struct gfs2_glock *gl, int flags)
truncate_inode_pages_range(mapping, start, end);
}
-static void gfs2_rgrp_go_dump(struct seq_file *seq, struct gfs2_glock *gl,
+static void gfs2_rgrp_go_dump(struct seq_file *seq, const struct gfs2_glock *gl,
const char *fs_id_buf)
{
struct gfs2_rgrpd *rgd = gl->gl_object;
@@ -536,28 +536,23 @@ static int inode_go_held(struct gfs2_holder *gh)
*
*/
-static void inode_go_dump(struct seq_file *seq, struct gfs2_glock *gl,
+static void inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl,
const char *fs_id_buf)
{
struct gfs2_inode *ip = gl->gl_object;
- struct inode *inode;
- unsigned long nrpages;
+ const struct inode *inode = &ip->i_inode;
if (ip == NULL)
return;
- inode = &ip->i_inode;
- xa_lock_irq(&inode->i_data.i_pages);
- nrpages = inode->i_data.nrpages;
- xa_unlock_irq(&inode->i_data.i_pages);
-
gfs2_print_dbg(seq, "%s I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu "
"p:%lu\n", fs_id_buf,
(unsigned long long)ip->i_no_formal_ino,
(unsigned long long)ip->i_no_addr,
- IF2DT(ip->i_inode.i_mode), ip->i_flags,
+ IF2DT(inode->i_mode), ip->i_flags,
(unsigned int)ip->i_diskflags,
- (unsigned long long)i_size_read(inode), nrpages);
+ (unsigned long long)i_size_read(inode),
+ inode->i_data.nrpages);
}
/**
diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index 8b1b50d19de1..04f2d78e8658 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -221,7 +221,7 @@ struct gfs2_glock_operations {
int (*go_demote_ok) (const struct gfs2_glock *gl);
int (*go_instantiate) (struct gfs2_glock *gl);
int (*go_held)(struct gfs2_holder *gh);
- void (*go_dump)(struct seq_file *seq, struct gfs2_glock *gl,
+ void (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl,
const char *fs_id_buf);
void (*go_callback)(struct gfs2_glock *gl, bool remote);
void (*go_free)(struct gfs2_glock *gl);
--
2.40.0
reply other threads:[~2023-06-27 13:40 UTC|newest]
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