[GFS2] Pre-pull patch posting (fixes)

[GFS2] Pre-pull patch posting (fixes)

[Steven Whitehouse]

Hi,

Here is the latest set of GFS2 fixes. They are all fairly small,

Steve.

[PATCH 1/4] GFS2: Fix refcnt leak on gfs2_follow_link() error path

[Steven Whitehouse]

From: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>

If ->follow_link handler return the error, it should decrement
nd->path refcnt.

This patch fix it.

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
---
 fs/gfs2/ops_inode.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c
index 78f73ca..84350e1 100644
--- a/fs/gfs2/ops_inode.c
+++ b/fs/gfs2/ops_inode.c
@@ -1088,7 +1088,8 @@ static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd)
 		error = vfs_follow_link(nd, buf);
 		if (buf != array)
 			kfree(buf);
-	}
+	} else
+		path_put(&nd->path);
 
 	return ERR_PTR(error);
 }
-- 
1.6.2.5

[PATCH 2/4] GFS2: Don't withdraw on partial rindex entries

[Steven Whitehouse]

From: Benjamin Marzinski <bmarzins@redhat.com>

ince gfs2 writes the rindex file a block at a time, and releases the
exclusive lock after each block, it is possible that another process
will grab the lock in the middle of the write.  Since rindex entries are
not an even divisor of blocks, that other process may see partial
entries.  On grows, this is fine.  The process can simply ignore the the
partial entires. Previously, the code withdrew when it saw partial
entries. Now it simply ignores them.

Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
---
 fs/gfs2/rgrp.c |    5 -----
 1 files changed, 0 insertions(+), 5 deletions(-)

diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index 0608f49..6702b82 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -591,11 +591,6 @@ static int gfs2_ri_update(struct gfs2_inode *ip)
 	u64 rgrp_count = ip->i_disksize;
 	int error;
 
-	if (do_div(rgrp_count, sizeof(struct gfs2_rindex))) {
-		gfs2_consist_inode(ip);
-		return -EIO;
-	}
-
 	clear_rgrpdi(sdp);
 
 	file_ra_state_init(&ra_state, inode->i_mapping);
-- 
1.6.2.5

[PATCH 3/4] GFS2: Fix previous patch

[Steven Whitehouse]

The do_div() call needs to remain.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
---
 fs/gfs2/rgrp.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index 6702b82..46534a5 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -591,6 +591,7 @@ static int gfs2_ri_update(struct gfs2_inode *ip)
 	u64 rgrp_count = ip->i_disksize;
 	int error;
 
+	do_div(rgrp_count, sizeof(struct gfs2_rindex));
 	clear_rgrpdi(sdp);
 
 	file_ra_state_init(&ra_state, inode->i_mapping);
-- 
1.6.2.5

[PATCH 4/4] GFS2: Use GFP_NOFS for alloc structure

[Steven Whitehouse]

This is called under a glock, so its a good plan to use GFP_NOFS

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
---
 fs/gfs2/rgrp.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index 46534a5..503b842 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -911,7 +911,7 @@ void gfs2_rgrp_repolish_clones(struct gfs2_rgrpd *rgd)
 struct gfs2_alloc *gfs2_alloc_get(struct gfs2_inode *ip)
 {
 	BUG_ON(ip->i_alloc != NULL);
-	ip->i_alloc = kzalloc(sizeof(struct gfs2_alloc), GFP_KERNEL);
+	ip->i_alloc = kzalloc(sizeof(struct gfs2_alloc), GFP_NOFS);
 	return ip->i_alloc;
 }
 
-- 
1.6.2.5