diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c
index ce62dcac90b6..5a49b037da81 100644
--- a/fs/gfs2/aops.c
+++ b/fs/gfs2/aops.c
@@ -431,7 +431,7 @@ static int gfs2_jdata_writepages(struct address_space *mapping,
ret = gfs2_write_cache_jdata(mapping, wbc);
if (ret == 0 && wbc->sync_mode == WB_SYNC_ALL) {
- gfs2_log_flush(sdp, ip->i_gl);
+ gfs2_log_flush(sdp, ip->i_gl, NORMAL_FLUSH);
ret = gfs2_write_cache_jdata(mapping, wbc);
}
return ret;
diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index c62d4b9f51dc..e6ee5b6e8d99 100644
--- a/fs/gfs2/bmap.c
+++ b/fs/gfs2/bmap.c
@@ -707,7 +707,7 @@ int gfs2_extent_map(struct inode *inode, u64 lblock, int *new, u64 *dblock, unsi
* @top: The first pointer in the buffer
* @bottom: One more than the last pointer
* @height: the height this buffer is at
- * @data: a pointer to a struct strip_mine
+ * @sm: a pointer to a struct strip_mine
*
* Returns: errno
*/
@@ -992,6 +992,8 @@ static int gfs2_block_truncate_page(struct address_space *mapping, loff_t from)
return err;
}
+#define GFS2_JTRUNC_REVOKES 8192
+
/**
* gfs2_journaled_truncate - Wrapper for truncate_pagecache for jdata files
* @inode: The inode being truncated
@@ -1003,8 +1005,6 @@ static int gfs2_block_truncate_page(struct address_space *mapping, loff_t from)
* if the number of pages being truncated gets too large.
*/
-#define GFS2_JTRUNC_REVOKES 8192
-
static int gfs2_journaled_truncate(struct inode *inode, u64 oldsize, u64 newsize)
{
struct gfs2_sbd *sdp = GFS2_SB(inode);
@@ -1348,7 +1348,7 @@ void gfs2_free_journal_extents(struct gfs2_jdesc *jd)
* gfs2_add_jextent - Add or merge a new extent to extent cache
* @jd: The journal descriptor
* @lblock: The logical block at start of new extent
- * @pblock: The physical block at start of new extent
+ * @dblock: The physical block at start of new extent
* @blocks: Size of extent in fs blocks
*
* Returns: 0 on success or -ENOMEM
diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index 80d67253623c..6ab0cfb2e891 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -203,9 +203,9 @@ void gfs2_set_inode_flags(struct inode *inode)
GFS2_DIF_INHERIT_JDATA)
/**
- * gfs2_set_flags - set flags on an inode
- * @inode: The inode
- * @flags: The flags to set
+ * do_gfs2_set_flags - set flags on an inode
+ * @filp: file pointer
+ * @reqflags: The flags to set
* @mask: Indicates which flags are valid
*
*/
@@ -256,7 +256,7 @@ static int do_gfs2_set_flags(struct file *filp, u32 reqflags, u32 mask)
}
if ((flags ^ new_flags) & GFS2_DIF_JDATA) {
if (flags & GFS2_DIF_JDATA)
- gfs2_log_flush(sdp, ip->i_gl);
+ gfs2_log_flush(sdp, ip->i_gl, NORMAL_FLUSH);
error = filemap_fdatawrite(inode->i_mapping);
if (error)
goto out;
@@ -318,7 +318,7 @@ static long gfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
/**
* gfs2_size_hint - Give a hint to the size of a write request
- * @file: The struct file
+ * @filep: The struct file
* @offset: The file offset of the write
* @size: The length of the write
*
@@ -371,7 +371,7 @@ static int gfs2_allocate_page_backing(struct page *page)
/**
* gfs2_page_mkwrite - Make a shared, mmap()ed, page writable
* @vma: The virtual memory area
- * @page: The page which is about to become writable
+ * @vmf: The virtual memory fault containing the page to become writable
*
* When the page becomes writable, we need to ensure that we have
* blocks allocated on disk to back that page.
diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c
index 74d9a3dbf16f..fc1100781bbc 100644
--- a/fs/gfs2/glops.c
+++ b/fs/gfs2/glops.c
@@ -89,18 +89,23 @@ static void gfs2_ail_empty_gl(struct gfs2_glock *gl)
if (!tr.tr_revokes)
return;
- /* A shortened, inline version of gfs2_trans_begin() */
+ /* A shortened, inline version of gfs2_trans_begin()
+ * tr->alloced is not set since the transaction structure is
+ * on the stack */
tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64));
tr.tr_ip = (unsigned long)__builtin_return_address(0);
sb_start_intwrite(sdp->sd_vfs);
- gfs2_log_reserve(sdp, tr.tr_reserved);
+ if (gfs2_log_reserve(sdp, tr.tr_reserved) < 0) {
+ sb_end_intwrite(sdp->sd_vfs);
+ return;
+ }
WARN_ON_ONCE(current->journal_info);
current->journal_info = &tr;
__gfs2_ail_flush(gl, 0, tr.tr_revokes);
gfs2_trans_end(sdp);
- gfs2_log_flush(sdp, NULL);
+ gfs2_log_flush(sdp, NULL, NORMAL_FLUSH);
}
void gfs2_ail_flush(struct gfs2_glock *gl, bool fsync)
@@ -121,7 +126,7 @@ void gfs2_ail_flush(struct gfs2_glock *gl, bool fsync)
return;
__gfs2_ail_flush(gl, fsync, max_revokes);
gfs2_trans_end(sdp);
- gfs2_log_flush(sdp, NULL);
+ gfs2_log_flush(sdp, NULL, NORMAL_FLUSH);
}
/**
@@ -144,7 +149,7 @@ static void rgrp_go_sync(struct gfs2_glock *gl)
return;
GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE);
- gfs2_log_flush(sdp, gl);
+ gfs2_log_flush(sdp, gl, NORMAL_FLUSH);
filemap_fdatawrite_range(mapping, gl->gl_vm.start, gl->gl_vm.end);
error = filemap_fdatawait_range(mapping, gl->gl_vm.start, gl->gl_vm.end);
mapping_set_error(mapping, error);
@@ -206,7 +211,7 @@ static void inode_go_sync(struct gfs2_glock *gl)
GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE);
- gfs2_log_flush(gl->gl_sbd, gl);
+ gfs2_log_flush(gl->gl_sbd, gl, NORMAL_FLUSH);
filemap_fdatawrite(metamapping);
if (ip) {
struct address_space *mapping = ip->i_inode.i_mapping;
@@ -253,7 +258,7 @@ static void inode_go_inval(struct gfs2_glock *gl, int flags)
}
if (ip == GFS2_I(gl->gl_sbd->sd_rindex)) {
- gfs2_log_flush(gl->gl_sbd, NULL);
+ gfs2_log_flush(gl->gl_sbd, NULL, NORMAL_FLUSH);
gl->gl_sbd->sd_rindex_uptodate = 0;
}
if (ip && S_ISREG(ip->i_inode.i_mode))
@@ -455,31 +460,39 @@ static void inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl)
}
/**
- * trans_go_sync - promote/demote the transaction glock
+ * freeze_go_sync - promote/demote the freeze glock
* @gl: the glock
* @state: the requested state
* @flags:
*
*/
-static void trans_go_sync(struct gfs2_glock *gl)
+static void freeze_go_sync(struct gfs2_glock *gl)
{
struct gfs2_sbd *sdp = gl->gl_sbd;
+ DEFINE_WAIT(wait);
- if (gl->gl_state != LM_ST_UNLOCKED &&
+ if (gl->gl_state == LM_ST_SHARED &&
test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
- gfs2_meta_syncfs(sdp);
- gfs2_log_shutdown(sdp);
+ atomic_set(&sdp->sd_log_freeze, 1);
+ wake_up(&sdp->sd_logd_waitq);
+ do {
+ prepare_to_wait(&sdp->sd_log_frozen_wait, &wait,
+ TASK_UNINTERRUPTIBLE);
+ if (atomic_read(&sdp->sd_log_freeze))
+ io_schedule();
+ } while(atomic_read(&sdp->sd_log_freeze));
+ finish_wait(&sdp->sd_log_frozen_wait, &wait);
}
}
/**
- * trans_go_xmote_bh - After promoting/demoting the transaction glock
+ * freeze_go_xmote_bh - After promoting/demoting the freeze glock
* @gl: the glock
*
*/
-static int trans_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh)
+static int freeze_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh)
{
struct gfs2_sbd *sdp = gl->gl_sbd;
struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode);
@@ -512,7 +525,7 @@ static int trans_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh)
* Always returns 0
*/
-static int trans_go_demote_ok(const struct gfs2_glock *gl)
+static int freeze_go_demote_ok(const struct gfs2_glock *gl)
{
return 0;
}
@@ -563,10 +576,10 @@ const struct gfs2_glock_operations gfs2_rgrp_glops = {
.go_flags = GLOF_LVB,
};
-const struct gfs2_glock_operations gfs2_trans_glops = {
- .go_sync = trans_go_sync,
- .go_xmote_bh = trans_go_xmote_bh,
- .go_demote_ok = trans_go_demote_ok,
+const struct gfs2_glock_operations gfs2_freeze_glops = {
+ .go_sync = freeze_go_sync,
+ .go_xmote_bh = freeze_go_xmote_bh,
+ .go_demote_ok = freeze_go_demote_ok,
.go_type = LM_TYPE_NONDISK,
};
diff --git a/fs/gfs2/glops.h b/fs/gfs2/glops.h
index bf95a2dc1662..7455d2629bcb 100644
--- a/fs/gfs2/glops.h
+++ b/fs/gfs2/glops.h
@@ -15,7 +15,7 @@
extern const struct gfs2_glock_operations gfs2_meta_glops;
extern const struct gfs2_glock_operations gfs2_inode_glops;
extern const struct gfs2_glock_operations gfs2_rgrp_glops;
-extern const struct gfs2_glock_operations gfs2_trans_glops;
+extern const struct gfs2_glock_operations gfs2_freeze_glops;
extern const struct gfs2_glock_operations gfs2_iopen_glops;
extern const struct gfs2_glock_operations gfs2_flock_glops;
extern const struct gfs2_glock_operations gfs2_nondisk_glops;
diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index bdf70c18610c..67d310c9ada3 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -465,9 +465,7 @@ struct gfs2_trans {
unsigned int tr_reserved;
unsigned int tr_touched:1;
unsigned int tr_attached:1;
-
- struct gfs2_holder tr_t_gh;
-
+ unsigned int tr_alloced:1;
unsigned int tr_num_buf_new;
unsigned int tr_num_databuf_new;
@@ -682,7 +680,7 @@ struct gfs2_sbd {
struct lm_lockstruct sd_lockstruct;
struct gfs2_holder sd_live_gh;
struct gfs2_glock *sd_rename_gl;
- struct gfs2_glock *sd_trans_gl;
+ struct gfs2_glock *sd_freeze_gl;
wait_queue_head_t sd_glock_wait;
atomic_t sd_glock_disposal;
struct completion sd_locking_init;
@@ -730,6 +728,8 @@ struct gfs2_sbd {
struct gfs2_holder sd_sc_gh;
struct gfs2_holder sd_qc_gh;
+ struct completion sd_journal_ready;
+
/* Daemon stuff */
struct task_struct *sd_logd_process;
@@ -794,6 +794,12 @@ struct gfs2_sbd {
/* For quiescing the filesystem */
struct gfs2_holder sd_freeze_gh;
+ struct gfs2_holder sd_freeze_root_gh;
+ struct gfs2_holder sd_thaw_gh;
+ atomic_t sd_log_freeze;
+ atomic_t sd_frozen_root;
+ wait_queue_head_t sd_frozen_root_wait;
+ wait_queue_head_t sd_log_frozen_wait;
char sd_fsname[GFS2_FSNAME_LEN];
char sd_table_name[GFS2_FSNAME_LEN];
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index 28cc7bf6575a..e62e59477884 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -1613,18 +1613,26 @@ int gfs2_permission(struct inode *inode, int mask)
{
struct gfs2_inode *ip;
struct gfs2_holder i_gh;
+ struct gfs2_sbd *sdp = GFS2_SB(inode);
int error;
int unlock = 0;
+ int frozen_root = 0;
ip = GFS2_I(inode);
if (gfs2_glock_is_locked_by_me(ip->i_gl) == NULL) {
- if (mask & MAY_NOT_BLOCK)
- return -ECHILD;
- error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh);
- if (error)
- return error;
- unlock = 1;
+ if (unlikely(gfs2_glock_is_held_excl(sdp->sd_freeze_gl) &&
+ inode == sdp->sd_root_dir->d_inode &&
+ atomic_inc_not_zero(&sdp->sd_frozen_root)))
+ frozen_root = 1;
+ else {
+ if (mask & MAY_NOT_BLOCK)
+ return -ECHILD;
+ error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh);
+ if (error)
+ return error;
+ unlock = 1;
+ }
}
if ((mask & MAY_WRITE) && IS_IMMUTABLE(inode))
@@ -1633,6 +1641,8 @@ int gfs2_permission(struct inode *inode, int mask)
error = generic_permission(inode, mask);
if (unlock)
gfs2_glock_dq_uninit(&i_gh);
+ else if (frozen_root && atomic_dec_and_test(&sdp->sd_frozen_root))
+ wake_up(&sdp->sd_frozen_root_wait);
return error;
}
@@ -1805,19 +1815,29 @@ static int gfs2_getattr(struct vfsmount *mnt, struct dentry *dentry,
struct inode *inode = dentry->d_inode;
struct gfs2_inode *ip = GFS2_I(inode);
struct gfs2_holder gh;
+ struct gfs2_sbd *sdp = GFS2_SB(inode);
int error;
int unlock = 0;
+ int frozen_root = 0;
if (gfs2_glock_is_locked_by_me(ip->i_gl) == NULL) {
- error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh);
- if (error)
- return error;
- unlock = 1;
+ if (unlikely(gfs2_glock_is_held_excl(sdp->sd_freeze_gl) &&
+ inode == sdp->sd_root_dir->d_inode &&
+ atomic_inc_not_zero(&sdp->sd_frozen_root)))
+ frozen_root = 1;
+ else {
+ error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh);
+ if (error)
+ return error;
+ unlock = 1;
+ }
}
generic_fillattr(inode, stat);
if (unlock)
gfs2_glock_dq_uninit(&gh);
+ else if (frozen_root && atomic_dec_and_test(&sdp->sd_frozen_root))
+ wake_up(&sdp->sd_frozen_root_wait);
return 0;
}
diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c
index 4a14d504ef83..3966fadbcebd 100644
--- a/fs/gfs2/log.c
+++ b/fs/gfs2/log.c
@@ -300,6 +300,23 @@ static void ail2_empty(struct gfs2_sbd *sdp, unsigned int new_tail)
spin_unlock(&sdp->sd_ail_lock);
}
+/**
+ * gfs2_log_release - Release a given number of log blocks
+ * @sdp: The GFS2 superblock
+ * @blks: The number of blocks
+ *
+ */
+
+void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks)
+{
+
+ atomic_add(blks, &sdp->sd_log_blks_free);
+ trace_gfs2_log_blocks(sdp, blks);
+ gfs2_assert_withdraw(sdp, atomic_read(&sdp->sd_log_blks_free) <=
+ sdp->sd_jdesc->jd_blocks);
+ up_read(&sdp->sd_log_flush_lock);
+}
+
/**
* gfs2_log_reserve - Make a log reservation
* @sdp: The GFS2 superblock
@@ -358,7 +375,10 @@ int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks)
wake_up(&sdp->sd_log_waitq);
down_read(&sdp->sd_log_flush_lock);
-
+ if (unlikely(!test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags))) {
+ gfs2_log_release(sdp, blks);
+ return -EROFS;
+ }
return 0;
}
@@ -671,7 +691,8 @@ static void log_write_header(struct gfs2_sbd *sdp, u32 flags)
*
*/
-void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl)
+void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl,
+ enum gfs2_flush_type type)
{
struct gfs2_trans *tr;
@@ -723,6 +744,42 @@ void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl)
}
spin_unlock(&sdp->sd_ail_lock);
gfs2_log_unlock(sdp);
+
+ if (atomic_read(&sdp->sd_log_freeze))
+ type = FREEZE_FLUSH;
+ if (type != NORMAL_FLUSH) {
+ if (!sdp->sd_log_idle) {
+ for (;;) {
+ gfs2_ail1_start(sdp);
+ gfs2_ail1_wait(sdp);
+ if (gfs2_ail1_empty(sdp))
+ break;
+ }
+ atomic_dec(&sdp->sd_log_blks_free); /* Adjust for unreserved buffer */
+ trace_gfs2_log_blocks(sdp, -1);
+ sdp->sd_log_flush_wrapped = 0;
+ log_write_header(sdp, 0);
+ sdp->sd_log_head = sdp->sd_log_flush_head;
+ }
+ if (type == SHUTDOWN_FLUSH || type == FREEZE_FLUSH)
+ gfs2_log_shutdown(sdp);
+ if (type == FREEZE_FLUSH) {
+ int error;
+
+ atomic_set(&sdp->sd_log_freeze, 0);
+ wake_up(&sdp->sd_log_frozen_wait);
+ error = gfs2_glock_nq_init(sdp->sd_freeze_gl,
+ LM_ST_SHARED, 0,
+ &sdp->sd_thaw_gh);
+ if (error) {
+ printk(KERN_INFO "GFS2: couln't get freeze lock : %d\n", error);
+ gfs2_assert_withdraw(sdp, 0);
+ }
+ else
+ gfs2_glock_dq_uninit(&sdp->sd_thaw_gh);
+ }
+ }
+
trace_gfs2_log_flush(sdp, 0);
up_write(&sdp->sd_log_flush_lock);
@@ -761,7 +818,7 @@ static void log_refund(struct gfs2_sbd *sdp, struct gfs2_trans *tr)
if (sdp->sd_log_tr) {
gfs2_merge_trans(sdp->sd_log_tr, tr);
} else if (tr->tr_num_buf_new || tr->tr_num_databuf_new) {
- gfs2_assert_withdraw(sdp, tr->tr_t_gh.gh_gl);
+ gfs2_assert_withdraw(sdp, tr->tr_alloced);
sdp->sd_log_tr = tr;
tr->tr_attached = 1;
}
@@ -813,8 +870,6 @@ void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr)
void gfs2_log_shutdown(struct gfs2_sbd *sdp)
{
- down_write(&sdp->sd_log_flush_lock);
-
gfs2_assert_withdraw(sdp, !sdp->sd_log_blks_reserved);
gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke);
gfs2_assert_withdraw(sdp, list_empty(&sdp->sd_ail1_list));
@@ -824,38 +879,16 @@ void gfs2_log_shutdown(struct gfs2_sbd *sdp)
log_write_header(sdp, GFS2_LOG_HEAD_UNMOUNT);
- gfs2_assert_warn(sdp, atomic_read(&sdp->sd_log_blks_free) == sdp->sd_jdesc->jd_blocks);
gfs2_assert_warn(sdp, sdp->sd_log_head == sdp->sd_log_tail);
gfs2_assert_warn(sdp, list_empty(&sdp->sd_ail2_list));
sdp->sd_log_head = sdp->sd_log_flush_head;
sdp->sd_log_tail = sdp->sd_log_head;
-
- up_write(&sdp->sd_log_flush_lock);
-}
-
-
-/**
- * gfs2_meta_syncfs - sync all the buffers in a filesystem
- * @sdp: the filesystem
- *
- */
-
-void gfs2_meta_syncfs(struct gfs2_sbd *sdp)
-{
- gfs2_log_flush(sdp, NULL);
- for (;;) {
- gfs2_ail1_start(sdp);
- gfs2_ail1_wait(sdp);
- if (gfs2_ail1_empty(sdp))
- break;
- }
- gfs2_log_flush(sdp, NULL);
}
static inline int gfs2_jrnl_flush_reqd(struct gfs2_sbd *sdp)
{
- return (atomic_read(&sdp->sd_log_pinned) >= atomic_read(&sdp->sd_log_thresh1));
+ return (atomic_read(&sdp->sd_log_pinned) >= atomic_read(&sdp->sd_log_thresh1) || atomic_read(&sdp->sd_log_freeze));
}
static inline int gfs2_ail_flush_reqd(struct gfs2_sbd *sdp)
@@ -882,14 +915,14 @@ int gfs2_logd(void *data)
if (gfs2_jrnl_flush_reqd(sdp) || t == 0) {
gfs2_ail1_empty(sdp);
- gfs2_log_flush(sdp, NULL);
+ gfs2_log_flush(sdp, NULL, NORMAL_FLUSH);
}
if (gfs2_ail_flush_reqd(sdp)) {
gfs2_ail1_start(sdp);
gfs2_ail1_wait(sdp);
gfs2_ail1_empty(sdp);
- gfs2_log_flush(sdp, NULL);
+ gfs2_log_flush(sdp, NULL, NORMAL_FLUSH);
}
if (!gfs2_ail_flush_reqd(sdp))
diff --git a/fs/gfs2/log.h b/fs/gfs2/log.h
index 37216634f0aa..9499a6049212 100644
--- a/fs/gfs2/log.h
+++ b/fs/gfs2/log.h
@@ -63,14 +63,21 @@ extern void gfs2_ordered_del_inode(struct gfs2_inode *ip);
extern unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct,
unsigned int ssize);
+extern void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks);
extern int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks);
-extern void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl);
+enum gfs2_flush_type {
+ NORMAL_FLUSH = 0,
+ SYNC_FLUSH,
+ SHUTDOWN_FLUSH,
+ FREEZE_FLUSH
+};
+extern void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl,
+ enum gfs2_flush_type type);
extern void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans);
extern void gfs2_remove_from_ail(struct gfs2_bufdata *bd);
extern void gfs2_ail1_flush(struct gfs2_sbd *sdp, struct writeback_control *wbc);
extern void gfs2_log_shutdown(struct gfs2_sbd *sdp);
-extern void gfs2_meta_syncfs(struct gfs2_sbd *sdp);
extern int gfs2_logd(void *data);
extern void gfs2_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd);
extern void gfs2_write_revokes(struct gfs2_sbd *sdp);
diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c
index a294d8d8bcd4..2c1ae861dc94 100644
--- a/fs/gfs2/lops.c
+++ b/fs/gfs2/lops.c
@@ -75,7 +75,7 @@ static void maybe_release_space(struct gfs2_bufdata *bd)
unsigned int index = bd->bd_bh->b_blocknr - gl->gl_name.ln_number;
struct gfs2_bitmap *bi = rgd->rd_bits + index;
- if (bi->bi_clone == 0)
+ if (bi->bi_clone == NULL)
return;
if (sdp->sd_args.ar_discard)
gfs2_rgrp_send_discards(sdp, rgd->rd_data0, bd->bd_bh, bi, 1, NULL);
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index 22f954051bb8..bc564c0d6d16 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -94,6 +94,7 @@ static struct gfs2_sbd *init_sbd(struct super_block *sb)
INIT_LIST_HEAD(&sdp->sd_jindex_list);
spin_lock_init(&sdp->sd_jindex_spin);
mutex_init(&sdp->sd_jindex_mutex);
+ init_completion(&sdp->sd_journal_ready);
INIT_LIST_HEAD(&sdp->sd_quota_list);
mutex_init(&sdp->sd_quota_mutex);
@@ -129,6 +130,10 @@ static struct gfs2_sbd *init_sbd(struct super_block *sb)
init_rwsem(&sdp->sd_log_flush_lock);
atomic_set(&sdp->sd_log_in_flight, 0);
init_waitqueue_head(&sdp->sd_log_flush_wait);
+ init_waitqueue_head(&sdp->sd_log_frozen_wait);
+ atomic_set(&sdp->sd_log_freeze, 0);
+ atomic_set(&sdp->sd_frozen_root, 0);
+ init_waitqueue_head(&sdp->sd_frozen_root_wait);
return sdp;
}
@@ -419,8 +424,8 @@ static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh,
goto fail_live;
}
- error = gfs2_glock_get(sdp, GFS2_TRANS_LOCK, &gfs2_trans_glops,
- CREATE, &sdp->sd_trans_gl);
+ error = gfs2_glock_get(sdp, GFS2_FREEZE_LOCK, &gfs2_freeze_glops,
+ CREATE, &sdp->sd_freeze_gl);
if (error) {
fs_err(sdp, "can't create transaction glock: %d\n", error);
goto fail_rename;
@@ -429,7 +434,7 @@ static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh,
return 0;
fail_trans:
- gfs2_glock_put(sdp->sd_trans_gl);
+ gfs2_glock_put(sdp->sd_freeze_gl);
fail_rename:
gfs2_glock_put(sdp->sd_rename_gl);
fail_live:
@@ -755,7 +760,15 @@ static int init_journal(struct gfs2_sbd *sdp, int undo)
set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags);
gfs2_glock_dq_uninit(&ji_gh);
jindex = 0;
-
+ if (!sdp->sd_args.ar_spectator) {
+ error = gfs2_glock_nq_init(sdp->sd_freeze_gl, LM_ST_SHARED, 0,
+ &sdp->sd_thaw_gh);
+ if (error) {
+ fs_err(sdp, "can't acquire freeze glock: %d\n", error);
+ goto fail_jinode_gh;
+ }
+ }
+ gfs2_glock_dq_uninit(&sdp->sd_thaw_gh);
return 0;
fail_jinode_gh:
@@ -784,6 +797,7 @@ static int init_inodes(struct gfs2_sbd *sdp, int undo)
goto fail_qinode;
error = init_journal(sdp, undo);
+ complete_all(&sdp->sd_journal_ready);
if (error)
goto fail;
@@ -1200,6 +1214,7 @@ static int fill_super(struct super_block *sb, struct gfs2_args *args, int silent
fail_locking:
init_locking(sdp, &mount_gh, UNDO);
fail_lm:
+ complete_all(&sdp->sd_journal_ready);
gfs2_gl_hash_clear(sdp);
gfs2_lm_unmount(sdp);
fail_debug:
@@ -1380,7 +1395,7 @@ static void gfs2_kill_sb(struct super_block *sb)
return;
}
- gfs2_meta_syncfs(sdp);
+ gfs2_log_flush(sdp, NULL, SYNC_FLUSH);
dput(sdp->sd_root_dir);
dput(sdp->sd_master_dir);
sdp->sd_root_dir = NULL;
diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index c4effff7cf55..64b29f7f6b4c 100644
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -778,6 +778,7 @@ static int gfs2_adjust_quota(struct gfs2_inode *ip, loff_t loc,
i_size_write(inode, size);
inode->i_mtime = inode->i_atime = CURRENT_TIME;
mark_inode_dirty(inode);
+ set_bit(QDF_REFRESH, &qd->qd_flags);
return 0;
unlock_out:
@@ -879,7 +880,7 @@ static int do_sync(unsigned int num_qd, struct gfs2_quota_data **qda)
gfs2_glock_dq_uninit(&ghs[qx]);
mutex_unlock(&ip->i_inode.i_mutex);
kfree(ghs);
- gfs2_log_flush(ip->i_gl->gl_sbd, ip->i_gl);
+ gfs2_log_flush(ip->i_gl->gl_sbd, ip->i_gl, NORMAL_FLUSH);
return error;
}
diff --git a/fs/gfs2/recovery.c b/fs/gfs2/recovery.c
index fe7a56fb6084..94555d4c5698 100644
--- a/fs/gfs2/recovery.c
+++ b/fs/gfs2/recovery.c
@@ -454,7 +454,7 @@ void gfs2_recover_func(struct work_struct *work)
struct gfs2_inode *ip = GFS2_I(jd->jd_inode);
struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
struct gfs2_log_header_host head;
- struct gfs2_holder j_gh, ji_gh, t_gh;
+ struct gfs2_holder j_gh, ji_gh, thaw_gh;
unsigned long t;
int ro = 0;
unsigned int pass;
@@ -508,11 +508,11 @@ void gfs2_recover_func(struct work_struct *work)
t = jiffies;
- /* Acquire a shared hold on the transaction lock */
+ /* Acquire a shared hold on the freeze lock */
- error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED,
- LM_FLAG_NOEXP | LM_FLAG_PRIORITY |
- GL_NOCACHE, &t_gh);
+ error = gfs2_glock_nq_init(sdp->sd_freeze_gl, LM_ST_SHARED,
+ LM_FLAG_NOEXP | LM_FLAG_PRIORITY,
+ &thaw_gh);
if (error)
goto fail_gunlock_ji;
@@ -538,7 +538,7 @@ void gfs2_recover_func(struct work_struct *work)
fs_warn(sdp, "jid=%u: Can't replay: read-only block "
"device\n", jd->jd_jid);
error = -EROFS;
- goto fail_gunlock_tr;
+ goto fail_gunlock_thaw;
}
fs_info(sdp, "jid=%u: Replaying journal...\n", jd->jd_jid);
@@ -549,14 +549,14 @@ void gfs2_recover_func(struct work_struct *work)
head.lh_blkno, pass);
lops_after_scan(jd, error, pass);
if (error)
- goto fail_gunlock_tr;
+ goto fail_gunlock_thaw;
}
error = clean_journal(jd, &head);
if (error)
- goto fail_gunlock_tr;
+ goto fail_gunlock_thaw;
- gfs2_glock_dq_uninit(&t_gh);
+ gfs2_glock_dq_uninit(&thaw_gh);
t = DIV_ROUND_UP(jiffies - t, HZ);
fs_info(sdp, "jid=%u: Journal replayed in %lus\n",
jd->jd_jid, t);
@@ -572,8 +572,8 @@ void gfs2_recover_func(struct work_struct *work)
fs_info(sdp, "jid=%u: Done\n", jd->jd_jid);
goto done;
-fail_gunlock_tr:
- gfs2_glock_dq_uninit(&t_gh);
+fail_gunlock_thaw:
+ gfs2_glock_dq_uninit(&thaw_gh);
fail_gunlock_ji:
if (jlocked) {
gfs2_glock_dq_uninit(&ji_gh);
diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index 281a7716e3f3..db629d1bd1bd 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -2001,7 +2001,7 @@ int gfs2_inplace_reserve(struct gfs2_inode *ip, const struct gfs2_alloc_parms *a
}
/* Flushing the log may release space */
if (loops == 2)
- gfs2_log_flush(sdp, NULL);
+ gfs2_log_flush(sdp, NULL, NORMAL_FLUSH);
}
return -ENOSPC;
diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
index de8afad89e51..1319b5c4ec68 100644
--- a/fs/gfs2/super.c
+++ b/fs/gfs2/super.c
@@ -399,7 +399,7 @@ int gfs2_make_fs_rw(struct gfs2_sbd *sdp)
{
struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode);
struct gfs2_glock *j_gl = ip->i_gl;
- struct gfs2_holder t_gh;
+ struct gfs2_holder thaw_gh;
struct gfs2_log_header_host head;
int error;
@@ -407,7 +407,8 @@ int gfs2_make_fs_rw(struct gfs2_sbd *sdp)
if (error)
return error;
- error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED, 0, &t_gh);
+ error = gfs2_glock_nq_init(sdp->sd_freeze_gl, LM_ST_SHARED, 0,
+ &thaw_gh);
if (error)
goto fail_threads;
@@ -433,13 +434,13 @@ int gfs2_make_fs_rw(struct gfs2_sbd *sdp)
set_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags);
- gfs2_glock_dq_uninit(&t_gh);
+ gfs2_glock_dq_uninit(&thaw_gh);
return 0;
fail:
- t_gh.gh_flags |= GL_NOCACHE;
- gfs2_glock_dq_uninit(&t_gh);
+ thaw_gh.gh_flags |= GL_NOCACHE;
+ gfs2_glock_dq_uninit(&thaw_gh);
fail_threads:
kthread_stop(sdp->sd_quotad_process);
kthread_stop(sdp->sd_logd_process);
@@ -635,15 +636,21 @@ struct lfcc {
*/
static int gfs2_lock_fs_check_clean(struct gfs2_sbd *sdp,
- struct gfs2_holder *t_gh)
+ struct gfs2_holder *freeze_gh)
{
struct gfs2_inode *ip;
struct gfs2_jdesc *jd;
struct lfcc *lfcc;
LIST_HEAD(list);
struct gfs2_log_header_host lh;
+ struct gfs2_inode *dip = GFS2_I(sdp->sd_root_dir->d_inode);
int error;
+ error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0,
+ &sdp->sd_freeze_root_gh);
+ if (error)
+ return error;
+ atomic_set(&sdp->sd_frozen_root, 1);
list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) {
lfcc = kmalloc(sizeof(struct lfcc), GFP_KERNEL);
if (!lfcc) {
@@ -659,8 +666,8 @@ static int gfs2_lock_fs_check_clean(struct gfs2_sbd *sdp,
list_add(&lfcc->list, &list);
}
- error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_DEFERRED,
- GL_NOCACHE, t_gh);
+ error = gfs2_glock_nq_init(sdp->sd_freeze_gl, LM_ST_EXCLUSIVE,
+ GL_NOCACHE, freeze_gh);
list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) {
error = gfs2_jdesc_check(jd);
@@ -676,7 +683,7 @@ static int gfs2_lock_fs_check_clean(struct gfs2_sbd *sdp,
}
if (error)
- gfs2_glock_dq_uninit(t_gh);
+ gfs2_glock_dq_uninit(freeze_gh);
out:
while (!list_empty(&list)) {
@@ -685,6 +692,11 @@ static int gfs2_lock_fs_check_clean(struct gfs2_sbd *sdp,
gfs2_glock_dq_uninit(&lfcc->gh);
kfree(lfcc);
}
+ if (error) {
+ atomic_dec(&sdp->sd_frozen_root);
+ wait_event(sdp->sd_frozen_root_wait, atomic_read(&sdp->sd_frozen_root) == 0);
+ gfs2_glock_dq_uninit(&sdp->sd_freeze_root_gh);
+ }
return error;
}
@@ -742,7 +754,7 @@ static int gfs2_write_inode(struct inode *inode, struct writeback_control *wbc)
int ret = 0;
if (wbc->sync_mode == WB_SYNC_ALL)
- gfs2_log_flush(GFS2_SB(inode), ip->i_gl);
+ gfs2_log_flush(GFS2_SB(inode), ip->i_gl, NORMAL_FLUSH);
if (bdi->dirty_exceeded)
gfs2_ail1_flush(sdp, wbc);
else
@@ -822,9 +834,18 @@ static void gfs2_dirty_inode(struct inode *inode, int flags)
static int gfs2_make_fs_ro(struct gfs2_sbd *sdp)
{
- struct gfs2_holder t_gh;
+ struct gfs2_holder thaw_gh;
int error;
+ error = gfs2_glock_nq_init(sdp->sd_freeze_gl, LM_ST_SHARED, GL_NOCACHE,
+ &thaw_gh);
+ if (error && !test_bit(SDF_SHUTDOWN, &sdp->sd_flags))
+ return error;
+
+ down_write(&sdp->sd_log_flush_lock);
+ clear_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags);
+ up_write(&sdp->sd_log_flush_lock);
+
kthread_stop(sdp->sd_quotad_process);
kthread_stop(sdp->sd_logd_process);
@@ -832,18 +853,11 @@ static int gfs2_make_fs_ro(struct gfs2_sbd *sdp)
gfs2_quota_sync(sdp->sd_vfs, 0);
gfs2_statfs_sync(sdp->sd_vfs, 0);
- error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED, GL_NOCACHE,
- &t_gh);
- if (error && !test_bit(SDF_SHUTDOWN, &sdp->sd_flags))
- return error;
+ gfs2_log_flush(sdp, NULL, SHUTDOWN_FLUSH);
+ gfs2_assert_warn(sdp, atomic_read(&sdp->sd_log_blks_free) == sdp->sd_jdesc->jd_blocks);
- gfs2_meta_syncfs(sdp);
- gfs2_log_shutdown(sdp);
-
- clear_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags);
-
- if (t_gh.gh_gl)
- gfs2_glock_dq_uninit(&t_gh);
+ if (thaw_gh.gh_gl)
+ gfs2_glock_dq_uninit(&thaw_gh);
gfs2_quota_cleanup(sdp);
@@ -900,7 +914,7 @@ static void gfs2_put_super(struct super_block *sb)
iput(sdp->sd_quota_inode);
gfs2_glock_put(sdp->sd_rename_gl);
- gfs2_glock_put(sdp->sd_trans_gl);
+ gfs2_glock_put(sdp->sd_freeze_gl);
if (!sdp->sd_args.ar_spectator) {
gfs2_glock_dq_uninit(&sdp->sd_journal_gh);
@@ -935,8 +949,8 @@ static int gfs2_sync_fs(struct super_block *sb, int wait)
struct gfs2_sbd *sdp = sb->s_fs_info;
gfs2_quota_sync(sb, -1);
- if (wait && sdp)
- gfs2_log_flush(sdp, NULL);
+ if (wait && sdp && !atomic_read(&sdp->sd_log_freeze))
+ gfs2_log_flush(sdp, NULL, NORMAL_FLUSH);
return 0;
}
@@ -986,6 +1000,9 @@ static int gfs2_unfreeze(struct super_block *sb)
struct gfs2_sbd *sdp = sb->s_fs_info;
gfs2_glock_dq_uninit(&sdp->sd_freeze_gh);
+ atomic_dec(&sdp->sd_frozen_root);
+ wait_event(sdp->sd_frozen_root_wait, atomic_read(&sdp->sd_frozen_root) == 0);
+ gfs2_glock_dq_uninit(&sdp->sd_freeze_root_gh);
return 0;
}
@@ -1525,7 +1542,7 @@ static void gfs2_evict_inode(struct inode *inode)
goto out_unlock;
out_truncate:
- gfs2_log_flush(sdp, ip->i_gl);
+ gfs2_log_flush(sdp, ip->i_gl, NORMAL_FLUSH);
if (test_bit(GLF_DIRTY, &ip->i_gl->gl_flags)) {
struct address_space *metamapping = gfs2_glock2aspace(ip->i_gl);
filemap_fdatawrite(metamapping);
diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c
index 529d9a9eb897..3ab566ba5696 100644
--- a/fs/gfs2/sys.c
+++ b/fs/gfs2/sys.c
@@ -240,8 +240,8 @@ static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len
if (gltype > LM_TYPE_JOURNAL)
return -EINVAL;
- if (gltype == LM_TYPE_NONDISK && glnum == GFS2_TRANS_LOCK)
- glops = &gfs2_trans_glops;
+ if (gltype == LM_TYPE_NONDISK && glnum == GFS2_FREEZE_LOCK)
+ glops = &gfs2_freeze_glops;
else
glops = gfs2_glops_list[gltype];
if (glops == NULL)
@@ -407,6 +407,9 @@ int gfs2_recover_set(struct gfs2_sbd *sdp, unsigned jid)
struct gfs2_jdesc *jd;
int rv;
+ /* Wait for our primary journal to be initialized */
+ wait_for_completion(&sdp->sd_journal_ready);
+
spin_lock(&sdp->sd_jindex_spin);
rv = -EBUSY;
if (sdp->sd_jdesc->jd_jid == jid)
diff --git a/fs/gfs2/trans.c b/fs/gfs2/trans.c
index bead90d27bad..0546ab4e28e8 100644
--- a/fs/gfs2/trans.c
+++ b/fs/gfs2/trans.c
@@ -48,6 +48,7 @@ int gfs2_trans_begin(struct gfs2_sbd *sdp, unsigned int blocks,
tr->tr_blocks = blocks;
tr->tr_revokes = revokes;
tr->tr_reserved = 1;
+ tr->tr_alloced = 1;
if (blocks)
tr->tr_reserved += 6 + blocks;
if (revokes)
@@ -57,48 +58,22 @@ int gfs2_trans_begin(struct gfs2_sbd *sdp, unsigned int blocks,
INIT_LIST_HEAD(&tr->tr_buf);
sb_start_intwrite(sdp->sd_vfs);
- gfs2_holder_init(sdp->sd_trans_gl, LM_ST_SHARED, 0, &tr->tr_t_gh);
-
- error = gfs2_glock_nq(&tr->tr_t_gh);
- if (error)
- goto fail_holder_uninit;
error = gfs2_log_reserve(sdp, tr->tr_reserved);
if (error)
- goto fail_gunlock;
+ goto fail;
current->journal_info = tr;
return 0;
-fail_gunlock:
- gfs2_glock_dq(&tr->tr_t_gh);
-
-fail_holder_uninit:
+fail:
sb_end_intwrite(sdp->sd_vfs);
- gfs2_holder_uninit(&tr->tr_t_gh);
kfree(tr);
return error;
}
-/**
- * gfs2_log_release - Release a given number of log blocks
- * @sdp: The GFS2 superblock
- * @blks: The number of blocks
- *
- */
-
-static void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks)
-{
-
- atomic_add(blks, &sdp->sd_log_blks_free);
- trace_gfs2_log_blocks(sdp, blks);
- gfs2_assert_withdraw(sdp, atomic_read(&sdp->sd_log_blks_free) <=
- sdp->sd_jdesc->jd_blocks);
- up_read(&sdp->sd_log_flush_lock);
-}
-
static void gfs2_print_trans(const struct gfs2_trans *tr)
{
pr_warn("Transaction created at: %pSR\n", (void *)tr->tr_ip);
@@ -119,11 +94,8 @@ void gfs2_trans_end(struct gfs2_sbd *sdp)
if (!tr->tr_touched) {
gfs2_log_release(sdp, tr->tr_reserved);
- if (tr->tr_t_gh.gh_gl) {
- gfs2_glock_dq(&tr->tr_t_gh);
- gfs2_holder_uninit(&tr->tr_t_gh);
+ if (tr->tr_alloced)
kfree(tr);
- }
sb_end_intwrite(sdp->sd_vfs);
return;
}
@@ -137,16 +109,12 @@ void gfs2_trans_end(struct gfs2_sbd *sdp)
gfs2_print_trans(tr);
gfs2_log_commit(sdp, tr);
- if (tr->tr_t_gh.gh_gl) {
- gfs2_glock_dq(&tr->tr_t_gh);
- gfs2_holder_uninit(&tr->tr_t_gh);
- if (!tr->tr_attached)
+ if (tr->tr_alloced && !tr->tr_attached)
kfree(tr);
- }
up_read(&sdp->sd_log_flush_lock);
if (sdp->sd_vfs->s_flags & MS_SYNCHRONOUS)
- gfs2_log_flush(sdp, NULL);
+ gfs2_log_flush(sdp, NULL, NORMAL_FLUSH);
sb_end_intwrite(sdp->sd_vfs);
}
diff --git a/include/uapi/linux/gfs2_ondisk.h b/include/uapi/linux/gfs2_ondisk.h
index db3fdd083882..1a763eaae0bb 100644
--- a/include/uapi/linux/gfs2_ondisk.h
+++ b/include/uapi/linux/gfs2_ondisk.h
@@ -20,7 +20,7 @@
#define GFS2_MOUNT_LOCK 0
#define GFS2_LIVE_LOCK 1
-#define GFS2_TRANS_LOCK 2
+#define GFS2_FREEZE_LOCK 2
#define GFS2_RENAME_LOCK 3
#define GFS2_CONTROL_LOCK 4
#define GFS2_MOUNTED_LOCK 5