[GFS2] Fix a ref count bug and other clean ups
This fixes a ref count bug that sometimes showed up a umount time
(causing it to hang) but it otherwise mostly harmless. At the same
time there are some clean ups including making the log operations
structures const, moving a memory allocation so that its not done
in the fast path of checking to see if there is an outstanding
transaction related to a particular glock.
Removes the sd_log_wrap varaible which was updated, but never actually
used anywhere. Updates the gfs2 ioctl() to run without the kernel lock
(which it never needed anyway). Removes the "invalidate inodes" loop
from GFS2's put_super routine. This is done in kill super anyway so
we don't need to do it here. The loop was also bogus in that if there
are any inodes "stuck" at this point its a bug and we need to know
about it rather than hide it by hanging forever.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
diff --git a/fs/gfs2/daemon.c b/fs/gfs2/daemon.c
index 94317dc..b3830b9 100644
--- a/fs/gfs2/daemon.c
+++ b/fs/gfs2/daemon.c
@@ -129,7 +129,7 @@
gfs2_ail1_empty(sdp, DIO_ALL);
if (time_after_eq(jiffies, t)) {
- gfs2_log_flush(sdp);
+ gfs2_log_flush(sdp, NULL);
sdp->sd_log_flush_time = jiffies;
}
diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c
index 66917f2..316eed6 100644
--- a/fs/gfs2/dir.c
+++ b/fs/gfs2/dir.c
@@ -789,6 +789,8 @@
if (error)
return ERR_PTR(error);
dent = gfs2_dirent_scan(inode, bh->b_data, bh->b_size, scan, name, NULL);
+ brelse(bh);
+
got_dent:
*pbh = bh;
return dent;
diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c
index d9334eb..d180c89 100644
--- a/fs/gfs2/glops.c
+++ b/fs/gfs2/glops.c
@@ -45,7 +45,7 @@
return;
if (test_and_clear_bit(GLF_DIRTY, &gl->gl_flags)) {
- gfs2_log_flush_glock(gl);
+ gfs2_log_flush(gl->gl_sbd, gl);
gfs2_meta_sync(gl, flags | DIO_START | DIO_WAIT);
if (flags & DIO_RELEASE)
gfs2_ail_empty_gl(gl);
@@ -149,12 +149,12 @@
if (test_bit(GLF_DIRTY, &gl->gl_flags)) {
if (meta && data) {
gfs2_page_sync(gl, flags | DIO_START);
- gfs2_log_flush_glock(gl);
+ gfs2_log_flush(gl->gl_sbd, gl);
gfs2_meta_sync(gl, flags | DIO_START | DIO_WAIT);
gfs2_page_sync(gl, flags | DIO_WAIT);
clear_bit(GLF_DIRTY, &gl->gl_flags);
} else if (meta) {
- gfs2_log_flush_glock(gl);
+ gfs2_log_flush(gl->gl_sbd, gl);
gfs2_meta_sync(gl, flags | DIO_START | DIO_WAIT);
} else if (data)
gfs2_page_sync(gl, flags | DIO_START | DIO_WAIT);
diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index 423cfa72..dfed83b 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -62,12 +62,12 @@
struct gfs2_log_descriptor *ld, __be64 *ptr,
int pass);
void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass);
- char *lo_name;
+ const char *lo_name;
};
struct gfs2_log_element {
struct list_head le_list;
- struct gfs2_log_operations *le_ops;
+ const struct gfs2_log_operations *le_ops;
};
struct gfs2_bitmap {
@@ -618,6 +618,7 @@
unsigned int sd_log_num_rg;
unsigned int sd_log_num_databuf;
unsigned int sd_log_num_jdata;
+ unsigned int sd_log_num_hdrs;
struct list_head sd_log_le_gl;
struct list_head sd_log_le_buf;
@@ -631,7 +632,6 @@
uint64_t sd_log_sequence;
unsigned int sd_log_head;
unsigned int sd_log_tail;
- uint64_t sd_log_wraps;
int sd_log_idle;
unsigned long sd_log_flush_time;
diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c
index ea69376..cadfef1 100644
--- a/fs/gfs2/log.c
+++ b/fs/gfs2/log.c
@@ -171,13 +171,14 @@
while(sdp->sd_log_blks_free <= blks) {
gfs2_log_unlock(sdp);
gfs2_ail1_empty(sdp, 0);
- gfs2_log_flush(sdp);
+ gfs2_log_flush(sdp, NULL);
if (try++)
gfs2_ail1_start(sdp, 0);
gfs2_log_lock(sdp);
}
sdp->sd_log_blks_free -= blks;
+ /* printk(KERN_INFO "reserved %u blocks (%u left)\n", blks, sdp->sd_log_blks_free); */
gfs2_log_unlock(sdp);
mutex_unlock(&sdp->sd_log_reserve_mutex);
@@ -199,6 +200,7 @@
gfs2_log_lock(sdp);
sdp->sd_log_blks_free += blks;
+ /* printk(KERN_INFO "released %u blocks (%u left)\n", blks, sdp->sd_log_blks_free); */
gfs2_assert_withdraw(sdp,
sdp->sd_log_blks_free <= sdp->sd_jdesc->jd_blocks);
gfs2_log_unlock(sdp);
@@ -342,6 +344,7 @@
gfs2_log_lock(sdp);
sdp->sd_log_blks_free += dist - ((pull) ? 1 : 0);
+ /* printk(KERN_INFO "pull tail refunding %u blocks (%u left) pull=%d\n", dist - ((pull) ? 1 : 0), sdp->sd_log_blks_free, pull); */
gfs2_assert_withdraw(sdp,
sdp->sd_log_blks_free <= sdp->sd_jdesc->jd_blocks);
gfs2_log_unlock(sdp);
@@ -364,6 +367,8 @@
unsigned int tail;
uint32_t hash;
+ /* printk(KERN_INFO "log write header start (flags=%08x, pull=%d)\n", flags, pull); */
+
bh = sb_getblk(sdp->sd_vfs, blkno);
lock_buffer(bh);
memset(bh->b_data, 0, bh->b_size);
@@ -398,6 +403,8 @@
sdp->sd_log_idle = (tail == sdp->sd_log_flush_head);
log_incr_head(sdp);
+
+ /* printk(KERN_INFO "log write header out\n"); */
}
static void log_flush_commit(struct gfs2_sbd *sdp)
@@ -432,20 +439,16 @@
}
/**
- * gfs2_log_flush_i - flush incore transaction(s)
+ * gfs2_log_flush - flush incore transaction(s)
* @sdp: the filesystem
* @gl: The glock structure to flush. If NULL, flush the whole incore log
*
*/
-void gfs2_log_flush_i(struct gfs2_sbd *sdp, struct gfs2_glock *gl)
+void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl)
{
struct gfs2_ail *ai;
- ai = kzalloc(sizeof(struct gfs2_ail), GFP_NOFS | __GFP_NOFAIL);
- INIT_LIST_HEAD(&ai->ai_ail1_list);
- INIT_LIST_HEAD(&ai->ai_ail2_list);
-
down_write(&sdp->sd_log_flush_lock);
if (gl) {
@@ -453,12 +456,14 @@
if (list_empty(&gl->gl_le.le_list)) {
gfs2_log_unlock(sdp);
up_write(&sdp->sd_log_flush_lock);
- kfree(ai);
return;
}
gfs2_log_unlock(sdp);
}
+ ai = kzalloc(sizeof(struct gfs2_ail), GFP_NOFS | __GFP_NOFAIL);
+ INIT_LIST_HEAD(&ai->ai_ail1_list);
+ INIT_LIST_HEAD(&ai->ai_ail2_list);
gfs2_assert_withdraw(sdp,
sdp->sd_log_num_buf == sdp->sd_log_commited_buf);
@@ -476,11 +481,12 @@
log_write_header(sdp, 0, PULL);
lops_after_commit(sdp, ai);
sdp->sd_log_head = sdp->sd_log_flush_head;
- if (sdp->sd_log_flush_wrapped)
- sdp->sd_log_wraps++;
+
+ /* printk(KERN_INFO "sd_log_num_hdrs %u\n", sdp->sd_log_num_hdrs); */
sdp->sd_log_blks_reserved =
sdp->sd_log_commited_buf =
+ sdp->sd_log_num_hdrs =
sdp->sd_log_commited_revoke = 0;
gfs2_log_lock(sdp);
@@ -519,8 +525,7 @@
sdp->sd_log_blks_free += tr->tr_reserved -
(reserved - sdp->sd_log_blks_reserved);
- gfs2_assert_withdraw(sdp,
- sdp->sd_log_blks_free >= old);
+ gfs2_assert_withdraw(sdp, sdp->sd_log_blks_free >= old);
gfs2_assert_withdraw(sdp,
sdp->sd_log_blks_free <= sdp->sd_jdesc->jd_blocks);
@@ -548,7 +553,7 @@
gfs2_log_lock(sdp);
if (sdp->sd_log_num_buf > gfs2_tune_get(sdp, gt_incore_log_blocks)) {
gfs2_log_unlock(sdp);
- gfs2_log_flush(sdp);
+ gfs2_log_flush(sdp, NULL);
} else
gfs2_log_unlock(sdp);
}
@@ -583,8 +588,6 @@
gfs2_assert_withdraw(sdp, list_empty(&sdp->sd_ail2_list));
sdp->sd_log_head = sdp->sd_log_flush_head;
- if (sdp->sd_log_flush_wrapped)
- sdp->sd_log_wraps++;
sdp->sd_log_tail = sdp->sd_log_head;
up_write(&sdp->sd_log_flush_lock);
diff --git a/fs/gfs2/log.h b/fs/gfs2/log.h
index e7a6a65..84a3e90 100644
--- a/fs/gfs2/log.h
+++ b/fs/gfs2/log.h
@@ -37,7 +37,6 @@
{
if (++value == sdp->sd_jdesc->jd_blocks) {
value = 0;
- sdp->sd_log_wraps++;
}
sdp->sd_log_head = sdp->sd_log_tail = value;
}
@@ -54,10 +53,7 @@
struct buffer_head *gfs2_log_get_buf(struct gfs2_sbd *sdp);
struct buffer_head *gfs2_log_fake_buf(struct gfs2_sbd *sdp,
struct buffer_head *real);
-
-#define gfs2_log_flush(sdp) gfs2_log_flush_i((sdp), NULL)
-#define gfs2_log_flush_glock(gl) gfs2_log_flush_i((gl)->gl_sbd, (gl))
-void gfs2_log_flush_i(struct gfs2_sbd *sdp, struct gfs2_glock *gl);
+void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl);
void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans);
void gfs2_log_shutdown(struct gfs2_sbd *sdp);
diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c
index 689c910..4d90eb3 100644
--- a/fs/gfs2/lops.c
+++ b/fs/gfs2/lops.c
@@ -130,6 +130,7 @@
if (total > limit)
num = limit;
bh = gfs2_log_get_buf(sdp);
+ sdp->sd_log_num_hdrs++;
ld = (struct gfs2_log_descriptor *)bh->b_data;
ptr = (__be64 *)(bh->b_data + offset);
ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC);
@@ -570,6 +571,7 @@
gfs2_log_unlock(sdp);
if (!bh) {
bh = gfs2_log_get_buf(sdp);
+ sdp->sd_log_num_hdrs++;
ld = (struct gfs2_log_descriptor *)
bh->b_data;
ptr = (__be64 *)(bh->b_data + offset);
@@ -750,13 +752,13 @@
}
-struct gfs2_log_operations gfs2_glock_lops = {
+const struct gfs2_log_operations gfs2_glock_lops = {
.lo_add = glock_lo_add,
.lo_after_commit = glock_lo_after_commit,
.lo_name = "glock"
};
-struct gfs2_log_operations gfs2_buf_lops = {
+const struct gfs2_log_operations gfs2_buf_lops = {
.lo_add = buf_lo_add,
.lo_incore_commit = buf_lo_incore_commit,
.lo_before_commit = buf_lo_before_commit,
@@ -767,7 +769,7 @@
.lo_name = "buf"
};
-struct gfs2_log_operations gfs2_revoke_lops = {
+const struct gfs2_log_operations gfs2_revoke_lops = {
.lo_add = revoke_lo_add,
.lo_before_commit = revoke_lo_before_commit,
.lo_before_scan = revoke_lo_before_scan,
@@ -776,13 +778,13 @@
.lo_name = "revoke"
};
-struct gfs2_log_operations gfs2_rg_lops = {
+const struct gfs2_log_operations gfs2_rg_lops = {
.lo_add = rg_lo_add,
.lo_after_commit = rg_lo_after_commit,
.lo_name = "rg"
};
-struct gfs2_log_operations gfs2_databuf_lops = {
+const struct gfs2_log_operations gfs2_databuf_lops = {
.lo_add = databuf_lo_add,
.lo_incore_commit = buf_lo_incore_commit,
.lo_before_commit = databuf_lo_before_commit,
@@ -792,7 +794,7 @@
.lo_name = "databuf"
};
-struct gfs2_log_operations *gfs2_log_ops[] = {
+const struct gfs2_log_operations *gfs2_log_ops[] = {
&gfs2_glock_lops,
&gfs2_buf_lops,
&gfs2_revoke_lops,
diff --git a/fs/gfs2/lops.h b/fs/gfs2/lops.h
index 417f5aa..0c78d22 100644
--- a/fs/gfs2/lops.h
+++ b/fs/gfs2/lops.h
@@ -10,16 +10,16 @@
#ifndef __LOPS_DOT_H__
#define __LOPS_DOT_H__
-extern struct gfs2_log_operations gfs2_glock_lops;
-extern struct gfs2_log_operations gfs2_buf_lops;
-extern struct gfs2_log_operations gfs2_revoke_lops;
-extern struct gfs2_log_operations gfs2_rg_lops;
-extern struct gfs2_log_operations gfs2_databuf_lops;
+extern const struct gfs2_log_operations gfs2_glock_lops;
+extern const struct gfs2_log_operations gfs2_buf_lops;
+extern const struct gfs2_log_operations gfs2_revoke_lops;
+extern const struct gfs2_log_operations gfs2_rg_lops;
+extern const struct gfs2_log_operations gfs2_databuf_lops;
-extern struct gfs2_log_operations *gfs2_log_ops[];
+extern const struct gfs2_log_operations *gfs2_log_ops[];
static inline void lops_init_le(struct gfs2_log_element *le,
- struct gfs2_log_operations *lops)
+ const struct gfs2_log_operations *lops)
{
INIT_LIST_HEAD(&le->le_list);
le->le_ops = lops;
diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c
index b85fa246..4a6aacf 100644
--- a/fs/gfs2/meta_io.c
+++ b/fs/gfs2/meta_io.c
@@ -59,11 +59,12 @@
static void stuck_releasepage(struct buffer_head *bh)
{
- struct gfs2_sbd *sdp = bh->b_page->mapping->host->i_sb->s_fs_info;
+ struct inode *inode = bh->b_page->mapping->host;
+ struct gfs2_sbd *sdp = inode->i_sb->s_fs_info;
struct gfs2_bufdata *bd = bh->b_private;
struct gfs2_glock *gl;
- fs_warn(sdp, "stuck in gfs2_releasepage()\n");
+ fs_warn(sdp, "stuck in gfs2_releasepage() %p\n", inode);
fs_warn(sdp, "blkno = %llu, bh->b_count = %d\n",
(uint64_t)bh->b_blocknr, atomic_read(&bh->b_count));
fs_warn(sdp, "pinned = %u\n", buffer_pinned(bh));
@@ -191,7 +192,6 @@
aspace->u.generic_ip = NULL;
insert_inode_hash(aspace);
}
-
return aspace;
}
@@ -353,7 +353,7 @@
gfs2_log_unlock(sdp);
gfs2_trans_end(sdp);
- gfs2_log_flush(sdp);
+ gfs2_log_flush(sdp, NULL);
}
/**
@@ -876,7 +876,7 @@
void gfs2_meta_syncfs(struct gfs2_sbd *sdp)
{
- gfs2_log_flush(sdp);
+ gfs2_log_flush(sdp, NULL);
for (;;) {
gfs2_ail1_start(sdp, DIO_ALL);
if (gfs2_ail1_empty(sdp, DIO_ALL))
diff --git a/fs/gfs2/ops_file.c b/fs/gfs2/ops_file.c
index 9bb2967..3fb1a29 100644
--- a/fs/gfs2/ops_file.c
+++ b/fs/gfs2/ops_file.c
@@ -561,8 +561,9 @@
[gfs2fl_InheritJdata] = IFLAG_INHERITJDATA,
};
-static int gfs2_get_flags(struct inode *inode, u32 __user *ptr)
+static int gfs2_get_flags(struct file *filp, u32 __user *ptr)
{
+ struct inode *inode = filp->f_dentry->d_inode;
struct gfs2_inode *ip = inode->u.generic_ip;
struct gfs2_holder gh;
int error;
@@ -600,8 +601,9 @@
* @mask: Indicates which flags are valid
*
*/
-static int do_gfs2_set_flags(struct inode *inode, u32 reqflags, u32 mask)
+static int do_gfs2_set_flags(struct file *filp, u32 reqflags, u32 mask)
{
+ struct inode *inode = filp->f_dentry->d_inode;
struct gfs2_inode *ip = inode->u.generic_ip;
struct gfs2_sbd *sdp = ip->i_sbd;
struct buffer_head *bh;
@@ -659,23 +661,22 @@
return error;
}
-static int gfs2_set_flags(struct inode *inode, u32 __user *ptr)
+static int gfs2_set_flags(struct file *filp, u32 __user *ptr)
{
u32 iflags, gfsflags;
if (get_user(iflags, ptr))
return -EFAULT;
gfsflags = iflags_cvt(iflags_to_gfs2, iflags);
- return do_gfs2_set_flags(inode, gfsflags, ~0);
+ return do_gfs2_set_flags(filp, gfsflags, ~0);
}
-int gfs2_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
- unsigned long arg)
+static long gfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
switch(cmd) {
case IFLAGS_GET_IOC:
- return gfs2_get_flags(inode, (u32 __user *)arg);
+ return gfs2_get_flags(filp, (u32 __user *)arg);
case IFLAGS_SET_IOC:
- return gfs2_set_flags(inode, (u32 __user *)arg);
+ return gfs2_set_flags(filp, (u32 __user *)arg);
}
return -ENOTTY;
}
@@ -808,7 +809,7 @@
{
struct gfs2_inode *ip = dentry->d_inode->u.generic_ip;
- gfs2_log_flush_glock(ip->i_gl);
+ gfs2_log_flush(ip->i_gl->gl_sbd, ip->i_gl);
return 0;
}
@@ -974,7 +975,7 @@
.write = generic_file_write,
.writev = generic_file_writev,
.aio_write = generic_file_aio_write,
- .ioctl = gfs2_ioctl,
+ .unlocked_ioctl = gfs2_ioctl,
.mmap = gfs2_mmap,
.open = gfs2_open,
.release = gfs2_close,
@@ -988,7 +989,7 @@
struct file_operations gfs2_dir_fops = {
.readdir = gfs2_readdir,
- .ioctl = gfs2_ioctl,
+ .unlocked_ioctl = gfs2_ioctl,
.open = gfs2_open,
.release = gfs2_close,
.fsync = gfs2_fsync,
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index 5166455..4538a1e 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -276,8 +276,8 @@
struct gfs2_inode *ip;
struct inode *inode;
- error = gfs2_glock_get(sdp, inum->no_addr,
- &gfs2_inode_glops, CREATE, &gl);
+ error = gfs2_glock_get(sdp, inum->no_addr, &gfs2_inode_glops,
+ CREATE, &gl);
if (!error) {
error = gfs2_inode_get(gl, inum, CREATE, &ip);
if (!error) {
diff --git a/fs/gfs2/ops_super.c b/fs/gfs2/ops_super.c
index f7349c0..80ce40c 100644
--- a/fs/gfs2/ops_super.c
+++ b/fs/gfs2/ops_super.c
@@ -53,7 +53,7 @@
if (current->flags & PF_MEMALLOC)
return 0;
if (ip && sync)
- gfs2_log_flush_glock(ip->i_gl);
+ gfs2_log_flush(ip->i_gl->gl_sbd, ip->i_gl);
return 0;
}
@@ -121,10 +121,8 @@
}
gfs2_glock_dq_uninit(&sdp->sd_live_gh);
-
gfs2_clear_rgrpd(sdp);
gfs2_jindex_free(sdp);
-
/* Take apart glock structures and buffer lists */
gfs2_gl_hash_clear(sdp, WAIT);
@@ -135,10 +133,6 @@
gfs2_sys_fs_del(sdp);
- /* Get rid of any extra inodes */
- while (invalidate_inodes(sb))
- yield();
-
vfree(sdp);
sb->s_fs_info = NULL;
@@ -149,13 +143,13 @@
* @sb: the filesystem
*
* This function is called every time sync(2) is called.
- * After this exits, all dirty buffers and synced.
+ * After this exits, all dirty buffers are synced.
*/
static void gfs2_write_super(struct super_block *sb)
{
struct gfs2_sbd *sdp = sb->s_fs_info;
- gfs2_log_flush(sdp);
+ gfs2_log_flush(sdp, NULL);
}
/**
diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index c57b5cf..90e32a3 100644
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -749,7 +749,7 @@
while (qx--)
gfs2_glock_dq_uninit(&ghs[qx]);
kfree(ghs);
- gfs2_log_flush_glock(ip->i_gl);
+ gfs2_log_flush(ip->i_gl->gl_sbd, ip->i_gl);
return error;
}
diff --git a/fs/gfs2/trans.c b/fs/gfs2/trans.c
index d72f79e..061f4a9 100644
--- a/fs/gfs2/trans.c
+++ b/fs/gfs2/trans.c
@@ -120,7 +120,7 @@
kfree(tr);
if (sdp->sd_vfs->s_flags & MS_SYNCHRONOUS)
- gfs2_log_flush(sdp);
+ gfs2_log_flush(sdp, NULL);
}
void gfs2_trans_add_gl(struct gfs2_glock *gl)