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Go Back   Linux Archive > Redhat > Cluster Development

 
 
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Old 12-17-2008, 10:30 AM
 
Default GFS2: Fix bug in gfs2_lock_fs_check_clean()

From: Steven Whitehouse <swhiteho@redhat.com>

gfs2_lock_fs_check_clean() should not be calling gfs2_jindex_hold()
since it doesn't work like rindex hold, despite the comment. That
allows gfs2_jindex_hold() to be moved into ops_fstype.c where it
can be made static.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

diff --git a/fs/gfs2/dir.h b/fs/gfs2/dir.h
index 8a468ca..4f91944 100644
--- a/fs/gfs2/dir.h
+++ b/fs/gfs2/dir.h
@@ -11,6 +11,7 @@
#define __DIR_DOT_H__

#include <linux/dcache.h>
+#include <linux/crc32.h>

struct inode;
struct gfs2_inode;
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index fc300ea..4cae60f 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -33,6 +33,7 @@
#include "util.h"
#include "log.h"
#include "quota.h"
+#include "dir.h"

#define DO 0
#define UNDO 1
@@ -638,6 +639,72 @@ static void gfs2_lm_others_may_mount(struct gfs2_sbd *sdp)
sdp->sd_lockstruct.ls_lockspace);
}

+/**
+ * gfs2_jindex_hold - Grab a lock on the jindex
+ * @sdp: The GFS2 superblock
+ * @ji_gh: the holder for the jindex glock
+ *
+ * Returns: errno
+ */
+
+static int gfs2_jindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ji_gh)
+{
+ struct gfs2_inode *dip = GFS2_I(sdp->sd_jindex);
+ struct qstr name;
+ char buf[20];
+ struct gfs2_jdesc *jd;
+ int error;
+
+ name.name = buf;
+
+ mutex_lock(&sdp->sd_jindex_mutex);
+
+ for (; {
+ error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, ji_gh);
+ if (error)
+ break;
+
+ name.len = sprintf(buf, "journal%u", sdp->sd_journals);
+ name.hash = gfs2_disk_hash(name.name, name.len);
+
+ error = gfs2_dir_check(sdp->sd_jindex, &name, NULL);
+ if (error == -ENOENT) {
+ error = 0;
+ break;
+ }
+
+ gfs2_glock_dq_uninit(ji_gh);
+
+ if (error)
+ break;
+
+ error = -ENOMEM;
+ jd = kzalloc(sizeof(struct gfs2_jdesc), GFP_KERNEL);
+ if (!jd)
+ break;
+
+ INIT_LIST_HEAD(&jd->extent_list);
+ jd->jd_inode = gfs2_lookupi(sdp->sd_jindex, &name, 1);
+ if (!jd->jd_inode || IS_ERR(jd->jd_inode)) {
+ if (!jd->jd_inode)
+ error = -ENOENT;
+ else
+ error = PTR_ERR(jd->jd_inode);
+ kfree(jd);
+ break;
+ }
+
+ spin_lock(&sdp->sd_jindex_spin);
+ jd->jd_jid = sdp->sd_journals++;
+ list_add_tail(&jd->jd_list, &sdp->sd_jindex_list);
+ spin_unlock(&sdp->sd_jindex_spin);
+ }
+
+ mutex_unlock(&sdp->sd_jindex_mutex);
+
+ return error;
+}
+
static int init_journal(struct gfs2_sbd *sdp, int undo)
{
struct inode *master = sdp->sd_master_dir->d_inode;
diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
index b858770..3dd9f57 100644
--- a/fs/gfs2/super.c
+++ b/fs/gfs2/super.c
@@ -34,76 +34,6 @@
#include "util.h"

/**
- * gfs2_jindex_hold - Grab a lock on the jindex
- * @sdp: The GFS2 superblock
- * @ji_gh: the holder for the jindex glock
- *
- * This is very similar to the gfs2_rindex_hold() function, except that
- * in general we hold the jindex lock for longer periods of time and
- * we grab it far less frequently (in general) then the rgrp lock.
- *
- * Returns: errno
- */
-
-int gfs2_jindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ji_gh)
-{
- struct gfs2_inode *dip = GFS2_I(sdp->sd_jindex);
- struct qstr name;
- char buf[20];
- struct gfs2_jdesc *jd;
- int error;
-
- name.name = buf;
-
- mutex_lock(&sdp->sd_jindex_mutex);
-
- for (; {
- error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, ji_gh);
- if (error)
- break;
-
- name.len = sprintf(buf, "journal%u", sdp->sd_journals);
- name.hash = gfs2_disk_hash(name.name, name.len);
-
- error = gfs2_dir_check(sdp->sd_jindex, &name, NULL);
- if (error == -ENOENT) {
- error = 0;
- break;
- }
-
- gfs2_glock_dq_uninit(ji_gh);
-
- if (error)
- break;
-
- error = -ENOMEM;
- jd = kzalloc(sizeof(struct gfs2_jdesc), GFP_KERNEL);
- if (!jd)
- break;
-
- INIT_LIST_HEAD(&jd->extent_list);
- jd->jd_inode = gfs2_lookupi(sdp->sd_jindex, &name, 1);
- if (!jd->jd_inode || IS_ERR(jd->jd_inode)) {
- if (!jd->jd_inode)
- error = -ENOENT;
- else
- error = PTR_ERR(jd->jd_inode);
- kfree(jd);
- break;
- }
-
- spin_lock(&sdp->sd_jindex_spin);
- jd->jd_jid = sdp->sd_journals++;
- list_add_tail(&jd->jd_list, &sdp->sd_jindex_list);
- spin_unlock(&sdp->sd_jindex_spin);
- }
-
- mutex_unlock(&sdp->sd_jindex_mutex);
-
- return error;
-}
-
-/**
* gfs2_jindex_free - Clear all the journal index information
* @sdp: The GFS2 superblock
*
@@ -580,10 +510,6 @@ static int gfs2_lock_fs_check_clean(struct gfs2_sbd *sdp,
struct gfs2_log_header_host lh;
int error;

- error = gfs2_jindex_hold(sdp, &ji_gh);
- if (error)
- return error;
-
list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) {
lfcc = kmalloc(sizeof(struct lfcc), GFP_KERNEL);
if (!lfcc) {
diff --git a/fs/gfs2/super.h b/fs/gfs2/super.h
index 1848dad..c625459 100644
--- a/fs/gfs2/super.h
+++ b/fs/gfs2/super.h
@@ -25,7 +25,6 @@ static inline unsigned int gfs2_jindex_size(struct gfs2_sbd *sdp)
return x;
}

-int gfs2_jindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ji_gh);
void gfs2_jindex_free(struct gfs2_sbd *sdp);

struct gfs2_jdesc *gfs2_jdesc_find(struct gfs2_sbd *sdp, unsigned int jid);
--
1.6.0.3
 

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