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-rw-r--r--fs/jffs2/background.c3
-rw-r--r--fs/jffs2/erase.c12
-rw-r--r--fs/jffs2/fs.c10
-rw-r--r--fs/jffs2/gc.c17
-rw-r--r--fs/jffs2/nodelist.h10
-rw-r--r--fs/jffs2/nodemgmt.c28
-rw-r--r--fs/jffs2/os-linux.h3
-rw-r--r--fs/jffs2/scan.c4
-rw-r--r--fs/jffs2/super.c2
-rw-r--r--fs/jffs2/wbuf.c8
10 files changed, 65 insertions, 32 deletions
diff --git a/fs/jffs2/background.c b/fs/jffs2/background.c
index 3ff50da9478..55f1dde2fa8 100644
--- a/fs/jffs2/background.c
+++ b/fs/jffs2/background.c
@@ -23,10 +23,9 @@ static int jffs2_garbage_collect_thread(void *);
void jffs2_garbage_collect_trigger(struct jffs2_sb_info *c)
{
- spin_lock(&c->erase_completion_lock);
+ assert_spin_locked(&c->erase_completion_lock);
if (c->gc_task && jffs2_thread_should_wake(c))
send_sig(SIGHUP, c->gc_task, 1);
- spin_unlock(&c->erase_completion_lock);
}
/* This must only ever be called when no GC thread is currently running */
diff --git a/fs/jffs2/erase.c b/fs/jffs2/erase.c
index b47679be118..6286ad9b00f 100644
--- a/fs/jffs2/erase.c
+++ b/fs/jffs2/erase.c
@@ -103,9 +103,10 @@ static void jffs2_erase_block(struct jffs2_sb_info *c,
jffs2_erase_failed(c, jeb, bad_offset);
}
-void jffs2_erase_pending_blocks(struct jffs2_sb_info *c, int count)
+int jffs2_erase_pending_blocks(struct jffs2_sb_info *c, int count)
{
struct jffs2_eraseblock *jeb;
+ int work_done = 0;
mutex_lock(&c->erase_free_sem);
@@ -121,6 +122,7 @@ void jffs2_erase_pending_blocks(struct jffs2_sb_info *c, int count)
mutex_unlock(&c->erase_free_sem);
jffs2_mark_erased_block(c, jeb);
+ work_done++;
if (!--count) {
D1(printk(KERN_DEBUG "Count reached. jffs2_erase_pending_blocks leaving\n"));
goto done;
@@ -157,6 +159,7 @@ void jffs2_erase_pending_blocks(struct jffs2_sb_info *c, int count)
mutex_unlock(&c->erase_free_sem);
done:
D1(printk(KERN_DEBUG "jffs2_erase_pending_blocks completed\n"));
+ return work_done;
}
static void jffs2_erase_succeeded(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb)
@@ -165,10 +168,11 @@ static void jffs2_erase_succeeded(struct jffs2_sb_info *c, struct jffs2_eraseblo
mutex_lock(&c->erase_free_sem);
spin_lock(&c->erase_completion_lock);
list_move_tail(&jeb->list, &c->erase_complete_list);
+ /* Wake the GC thread to mark them clean */
+ jffs2_garbage_collect_trigger(c);
spin_unlock(&c->erase_completion_lock);
mutex_unlock(&c->erase_free_sem);
- /* Ensure that kupdated calls us again to mark them clean */
- jffs2_erase_pending_trigger(c);
+ wake_up(&c->erase_wait);
}
static void jffs2_erase_failed(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, uint32_t bad_offset)
@@ -487,9 +491,9 @@ filebad:
refile:
/* Stick it back on the list from whence it came and come back later */
- jffs2_erase_pending_trigger(c);
mutex_lock(&c->erase_free_sem);
spin_lock(&c->erase_completion_lock);
+ jffs2_garbage_collect_trigger(c);
list_move(&jeb->list, &c->erase_complete_list);
spin_unlock(&c->erase_completion_lock);
mutex_unlock(&c->erase_free_sem);
diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c
index 3451a81b214..86e0821fc98 100644
--- a/fs/jffs2/fs.c
+++ b/fs/jffs2/fs.c
@@ -313,8 +313,8 @@ struct inode *jffs2_iget(struct super_block *sb, unsigned long ino)
case S_IFBLK:
case S_IFCHR:
/* Read the device numbers from the media */
- if (f->metadata->size != sizeof(jdev.old) &&
- f->metadata->size != sizeof(jdev.new)) {
+ if (f->metadata->size != sizeof(jdev.old_id) &&
+ f->metadata->size != sizeof(jdev.new_id)) {
printk(KERN_NOTICE "Device node has strange size %d\n", f->metadata->size);
goto error_io;
}
@@ -325,10 +325,10 @@ struct inode *jffs2_iget(struct super_block *sb, unsigned long ino)
printk(KERN_NOTICE "Read device numbers for inode %lu failed\n", (unsigned long)inode->i_ino);
goto error;
}
- if (f->metadata->size == sizeof(jdev.old))
- rdev = old_decode_dev(je16_to_cpu(jdev.old));
+ if (f->metadata->size == sizeof(jdev.old_id))
+ rdev = old_decode_dev(je16_to_cpu(jdev.old_id));
else
- rdev = new_decode_dev(je32_to_cpu(jdev.new));
+ rdev = new_decode_dev(je32_to_cpu(jdev.new_id));
case S_IFSOCK:
case S_IFIFO:
diff --git a/fs/jffs2/gc.c b/fs/jffs2/gc.c
index 3b6f2fa12cf..f5e96bd656e 100644
--- a/fs/jffs2/gc.c
+++ b/fs/jffs2/gc.c
@@ -214,6 +214,19 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
return ret;
}
+ /* If there are any blocks which need erasing, erase them now */
+ if (!list_empty(&c->erase_complete_list) ||
+ !list_empty(&c->erase_pending_list)) {
+ spin_unlock(&c->erase_completion_lock);
+ D1(printk(KERN_DEBUG "jffs2_garbage_collect_pass() erasing pending blocks\n"));
+ if (jffs2_erase_pending_blocks(c, 1)) {
+ mutex_unlock(&c->alloc_sem);
+ return 0;
+ }
+ D1(printk(KERN_DEBUG "No progress from erasing blocks; doing GC anyway\n"));
+ spin_lock(&c->erase_completion_lock);
+ }
+
/* First, work out which block we're garbage-collecting */
jeb = c->gcblock;
@@ -222,7 +235,7 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
if (!jeb) {
/* Couldn't find a free block. But maybe we can just erase one and make 'progress'? */
- if (!list_empty(&c->erase_pending_list)) {
+ if (c->nr_erasing_blocks) {
spin_unlock(&c->erase_completion_lock);
mutex_unlock(&c->alloc_sem);
return -EAGAIN;
@@ -435,7 +448,7 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
list_add_tail(&c->gcblock->list, &c->erase_pending_list);
c->gcblock = NULL;
c->nr_erasing_blocks++;
- jffs2_erase_pending_trigger(c);
+ jffs2_garbage_collect_trigger(c);
}
spin_unlock(&c->erase_completion_lock);
diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h
index 507ed6ec184..a881a42f19e 100644
--- a/fs/jffs2/nodelist.h
+++ b/fs/jffs2/nodelist.h
@@ -312,11 +312,11 @@ static inline int jffs2_blocks_use_vmalloc(struct jffs2_sb_info *c)
static inline int jffs2_encode_dev(union jffs2_device_node *jdev, dev_t rdev)
{
if (old_valid_dev(rdev)) {
- jdev->old = cpu_to_je16(old_encode_dev(rdev));
- return sizeof(jdev->old);
+ jdev->old_id = cpu_to_je16(old_encode_dev(rdev));
+ return sizeof(jdev->old_id);
} else {
- jdev->new = cpu_to_je32(new_encode_dev(rdev));
- return sizeof(jdev->new);
+ jdev->new_id = cpu_to_je32(new_encode_dev(rdev));
+ return sizeof(jdev->new_id);
}
}
@@ -464,7 +464,7 @@ int jffs2_scan_dirty_space(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb
int jffs2_do_mount_fs(struct jffs2_sb_info *c);
/* erase.c */
-void jffs2_erase_pending_blocks(struct jffs2_sb_info *c, int count);
+int jffs2_erase_pending_blocks(struct jffs2_sb_info *c, int count);
void jffs2_free_jeb_node_refs(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
diff --git a/fs/jffs2/nodemgmt.c b/fs/jffs2/nodemgmt.c
index 191359dde4e..694aa5b0350 100644
--- a/fs/jffs2/nodemgmt.c
+++ b/fs/jffs2/nodemgmt.c
@@ -116,9 +116,21 @@ int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize,
ret = jffs2_garbage_collect_pass(c);
- if (ret == -EAGAIN)
- jffs2_erase_pending_blocks(c, 1);
- else if (ret)
+ if (ret == -EAGAIN) {
+ spin_lock(&c->erase_completion_lock);
+ if (c->nr_erasing_blocks &&
+ list_empty(&c->erase_pending_list) &&
+ list_empty(&c->erase_complete_list)) {
+ DECLARE_WAITQUEUE(wait, current);
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ add_wait_queue(&c->erase_wait, &wait);
+ D1(printk(KERN_DEBUG "%s waiting for erase to complete\n", __func__));
+ spin_unlock(&c->erase_completion_lock);
+
+ schedule();
+ } else
+ spin_unlock(&c->erase_completion_lock);
+ } else if (ret)
return ret;
cond_resched();
@@ -217,7 +229,7 @@ static int jffs2_find_nextblock(struct jffs2_sb_info *c)
ejeb = list_entry(c->erasable_list.next, struct jffs2_eraseblock, list);
list_move_tail(&ejeb->list, &c->erase_pending_list);
c->nr_erasing_blocks++;
- jffs2_erase_pending_trigger(c);
+ jffs2_garbage_collect_trigger(c);
D1(printk(KERN_DEBUG "jffs2_find_nextblock: Triggering erase of erasable block at 0x%08x\n",
ejeb->offset));
}
@@ -469,7 +481,9 @@ struct jffs2_raw_node_ref *jffs2_add_physical_node_ref(struct jffs2_sb_info *c,
void jffs2_complete_reservation(struct jffs2_sb_info *c)
{
D1(printk(KERN_DEBUG "jffs2_complete_reservation()\n"));
+ spin_lock(&c->erase_completion_lock);
jffs2_garbage_collect_trigger(c);
+ spin_unlock(&c->erase_completion_lock);
mutex_unlock(&c->alloc_sem);
}
@@ -611,7 +625,7 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
D1(printk(KERN_DEBUG "...and adding to erase_pending_list\n"));
list_add_tail(&jeb->list, &c->erase_pending_list);
c->nr_erasing_blocks++;
- jffs2_erase_pending_trigger(c);
+ jffs2_garbage_collect_trigger(c);
} else {
/* Sometimes, however, we leave it elsewhere so it doesn't get
immediately reused, and we spread the load a bit. */
@@ -732,6 +746,10 @@ int jffs2_thread_should_wake(struct jffs2_sb_info *c)
int nr_very_dirty = 0;
struct jffs2_eraseblock *jeb;
+ if (!list_empty(&c->erase_complete_list) ||
+ !list_empty(&c->erase_pending_list))
+ return 1;
+
if (c->unchecked_size) {
D1(printk(KERN_DEBUG "jffs2_thread_should_wake(): unchecked_size %d, checked_ino #%d\n",
c->unchecked_size, c->checked_ino));
diff --git a/fs/jffs2/os-linux.h b/fs/jffs2/os-linux.h
index a7f03b7ebcb..035a767f958 100644
--- a/fs/jffs2/os-linux.h
+++ b/fs/jffs2/os-linux.h
@@ -140,8 +140,7 @@ void jffs2_nor_wbuf_flash_cleanup(struct jffs2_sb_info *c);
#endif /* WRITEBUFFER */
-/* erase.c */
-static inline void jffs2_erase_pending_trigger(struct jffs2_sb_info *c)
+static inline void jffs2_dirty_trigger(struct jffs2_sb_info *c)
{
OFNI_BS_2SFFJ(c)->s_dirt = 1;
}
diff --git a/fs/jffs2/scan.c b/fs/jffs2/scan.c
index 696686cc206..46f870d1cc3 100644
--- a/fs/jffs2/scan.c
+++ b/fs/jffs2/scan.c
@@ -260,7 +260,9 @@ int jffs2_scan_medium(struct jffs2_sb_info *c)
ret = -EIO;
goto out;
}
- jffs2_erase_pending_trigger(c);
+ spin_lock(&c->erase_completion_lock);
+ jffs2_garbage_collect_trigger(c);
+ spin_unlock(&c->erase_completion_lock);
}
ret = 0;
out:
diff --git a/fs/jffs2/super.c b/fs/jffs2/super.c
index 9a80e8e595d..511e2d609d1 100644
--- a/fs/jffs2/super.c
+++ b/fs/jffs2/super.c
@@ -63,8 +63,6 @@ static void jffs2_write_super(struct super_block *sb)
if (!(sb->s_flags & MS_RDONLY)) {
D1(printk(KERN_DEBUG "jffs2_write_super()\n"));
- jffs2_garbage_collect_trigger(c);
- jffs2_erase_pending_blocks(c, 0);
jffs2_flush_wbuf_gc(c, 0);
}
diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c
index 5ef7bac265e..07ee1546b2f 100644
--- a/fs/jffs2/wbuf.c
+++ b/fs/jffs2/wbuf.c
@@ -84,7 +84,7 @@ static void jffs2_wbuf_dirties_inode(struct jffs2_sb_info *c, uint32_t ino)
struct jffs2_inodirty *new;
/* Mark the superblock dirty so that kupdated will flush... */
- jffs2_erase_pending_trigger(c);
+ jffs2_dirty_trigger(c);
if (jffs2_wbuf_pending_for_ino(c, ino))
return;
@@ -121,7 +121,7 @@ static inline void jffs2_refile_wbuf_blocks(struct jffs2_sb_info *c)
D1(printk(KERN_DEBUG "...and adding to erase_pending_list\n"));
list_add_tail(&jeb->list, &c->erase_pending_list);
c->nr_erasing_blocks++;
- jffs2_erase_pending_trigger(c);
+ jffs2_garbage_collect_trigger(c);
} else {
/* Sometimes, however, we leave it elsewhere so it doesn't get
immediately reused, and we spread the load a bit. */
@@ -152,7 +152,7 @@ static void jffs2_block_refile(struct jffs2_sb_info *c, struct jffs2_eraseblock
D1(printk("Refiling block at %08x to erase_pending_list\n", jeb->offset));
list_add(&jeb->list, &c->erase_pending_list);
c->nr_erasing_blocks++;
- jffs2_erase_pending_trigger(c);
+ jffs2_garbage_collect_trigger(c);
}
if (!jffs2_prealloc_raw_node_refs(c, jeb, 1)) {
@@ -543,7 +543,7 @@ static void jffs2_wbuf_recover(struct jffs2_sb_info *c)
D1(printk(KERN_DEBUG "Failing block at %08x is now empty. Moving to erase_pending_list\n", jeb->offset));
list_move(&jeb->list, &c->erase_pending_list);
c->nr_erasing_blocks++;
- jffs2_erase_pending_trigger(c);
+ jffs2_garbage_collect_trigger(c);
}
jffs2_dbg_acct_sanity_check_nolock(c, jeb);
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-11-23 19:46:58 +0000