#include <linux/mtd/mtd.h>
#include <linux/blkdev.h>
#include <linux/blkpg.h>
+ #include <linux/freezer.h>
#include <linux/spinlock.h>
#include <linux/hdreg.h>
#include <linux/init.h>
#include <linux/kthread.h>
#include <asm/uaccess.h>
-static LIST_HEAD(blktrans_majors);
+#include "mtdcore.h"
-extern struct mutex mtd_table_mutex;
-extern struct mtd_info *mtd_table[];
+static LIST_HEAD(blktrans_majors);
struct mtd_blkcore_priv {
struct task_struct *thread;
struct request_queue *rq = tr->blkcore_priv->rq;
/* we might get involved when memory gets low, so use PF_MEMALLOC */
- current->flags |= PF_MEMALLOC | PF_NOFREEZE;
+ current->flags |= PF_MEMALLOC;
spin_lock_irq(rq->queue_lock);
while (!kthread_should_stop()) {
}
}
-struct block_device_operations mtd_blktrans_ops = {
+static struct block_device_operations mtd_blktrans_ops = {
.owner = THIS_MODULE,
.open = blktrans_open,
.release = blktrans_release,
config JBD2_DEBUG
bool "JBD2 (ext4dev/ext4) debugging support"
- depends on JBD2
+ depends on JBD2 && DEBUG_FS
help
If you are using the ext4dev/ext4 journaled file system (or
potentially any other filesystem/device using JBD2), this option
By default, the debugging output will be turned off.
If you select Y here, then you will be able to turn on debugging
- with "echo N > /proc/sys/fs/jbd2-debug", where N is a number between
- 1 and 5. The higher the number, the more debugging output is
- generated. To turn debugging off again, do
- "echo 0 > /proc/sys/fs/jbd2-debug".
+ with "echo N > /sys/kernel/debug/jbd2/jbd2-debug", where N is a
+ number between 1 and 5. The higher the number, the more debugging
+ output is generated. To turn debugging off again, do
+ "echo 0 > /sys/kernel/debug/jbd2/jbd2-debug".
config FS_MBCACHE
# Meta block cache for Extended Attributes (ext2/ext3/ext4)
config HUGETLBFS
bool "HugeTLB file system support"
- depends on X86 || IA64 || PPC64 || SPARC64 || SUPERH || BROKEN
+ depends on X86 || IA64 || PPC64 || SPARC64 || (SUPERH && MMU) || BROKEN
help
hugetlbfs is a filesystem backing for HugeTLB pages, based on
ramfs. For architectures that support it, say Y here and read
- NOR flash with transparent ECC
- DataFlash
+config JFFS2_FS_WBUF_VERIFY
+ bool "Verify JFFS2 write-buffer reads"
+ depends on JFFS2_FS_WRITEBUFFER
+ default n
+ help
+ This causes JFFS2 to read back every page written through the
+ write-buffer, and check for errors.
+
config JFFS2_SUMMARY
bool "JFFS2 summary support (EXPERIMENTAL)"
depends on JFFS2_FS && EXPERIMENTAL
select ZLIB_DEFLATE
depends on JFFS2_FS
default y
- help
- Zlib is designed to be a free, general-purpose, legally unencumbered,
- lossless data-compression library for use on virtually any computer
- hardware and operating system. See <http://www.gzip.org/zlib/> for
- further information.
+ help
+ Zlib is designed to be a free, general-purpose, legally unencumbered,
+ lossless data-compression library for use on virtually any computer
+ hardware and operating system. See <http://www.gzip.org/zlib/> for
+ further information.
- Say 'Y' if unsure.
+ Say 'Y' if unsure.
+
+config JFFS2_LZO
+ bool "JFFS2 LZO compression support" if JFFS2_COMPRESSION_OPTIONS
+ select LZO_COMPRESS
+ select LZO_DECOMPRESS
+ depends on JFFS2_FS
+ default y
+ help
+ minilzo-based compression. Generally works better than Zlib.
+
+ Say 'Y' if unsure.
config JFFS2_RTIME
bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS
depends on JFFS2_FS
default y
- help
- Rtime does manage to recompress already-compressed data. Say 'Y' if unsure.
+ help
+ Rtime does manage to recompress already-compressed data. Say 'Y' if unsure.
config JFFS2_RUBIN
bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS
depends on JFFS2_FS
default n
- help
- RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure.
+ help
+ RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure.
choice
- prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS
- default JFFS2_CMODE_PRIORITY
- depends on JFFS2_FS
- help
- You can set here the default compression mode of JFFS2 from
- the available compression modes. Don't touch if unsure.
+ prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS
+ default JFFS2_CMODE_PRIORITY
+ depends on JFFS2_FS
+ help
+ You can set here the default compression mode of JFFS2 from
+ the available compression modes. Don't touch if unsure.
config JFFS2_CMODE_NONE
- bool "no compression"
- help
- Uses no compression.
+ bool "no compression"
+ help
+ Uses no compression.
config JFFS2_CMODE_PRIORITY
- bool "priority"
- help
- Tries the compressors in a predefined order and chooses the first
- successful one.
+ bool "priority"
+ help
+ Tries the compressors in a predefined order and chooses the first
+ successful one.
config JFFS2_CMODE_SIZE
- bool "size (EXPERIMENTAL)"
- help
- Tries all compressors and chooses the one which has the smallest
- result.
+ bool "size (EXPERIMENTAL)"
+ help
+ Tries all compressors and chooses the one which has the smallest
+ result.
+
+config JFFS2_CMODE_FAVOURLZO
+ bool "Favour LZO"
+ help
+ Tries all compressors and chooses the one which has the smallest
+ result but gives some preference to LZO (which has faster
+ decompression) at the expense of size.
endchoice
config NFSD_V4
bool "Provide NFSv4 server support (EXPERIMENTAL)"
- depends on NFSD_V3 && EXPERIMENTAL
+ depends on NFSD && NFSD_V3 && EXPERIMENTAL
+ select RPCSEC_GSS_KRB5
help
If you would like to include the NFSv4 server as well as the NFSv2
and NFSv3 servers, say Y here. This feature is experimental, and
config 9P_FS
tristate "Plan 9 Resource Sharing Support (9P2000) (Experimental)"
- depends on INET && EXPERIMENTAL
+ depends on INET && NET_9P && EXPERIMENTAL
help
If you say Y here, you will get experimental support for
Plan 9 resource sharing via the 9P2000 protocol.
void jffs2_garbage_collect_trigger(struct jffs2_sb_info *c)
{
spin_lock(&c->erase_completion_lock);
- if (c->gc_task && jffs2_thread_should_wake(c))
- send_sig(SIGHUP, c->gc_task, 1);
+ if (c->gc_task && jffs2_thread_should_wake(c))
+ send_sig(SIGHUP, c->gc_task, 1);
spin_unlock(&c->erase_completion_lock);
}
set_user_nice(current, 10);
+ set_freezable();
for (;;) {
allow_signal(SIGHUP);
-
+ again:
if (!jffs2_thread_should_wake(c)) {
set_current_state (TASK_INTERRUPTIBLE);
D1(printk(KERN_DEBUG "jffs2_garbage_collect_thread sleeping...\n"));
schedule();
}
- if (try_to_freeze())
- continue;
-
/* This thread is purely an optimisation. But if it runs when
other things could be running, it actually makes things a
lot worse. Use yield() and put it at the back of the runqueue
siginfo_t info;
unsigned long signr;
+ if (try_to_freeze())
+ goto again;
+
signr = dequeue_signal_lock(current, ¤t->blocked, &info);
switch(signr) {
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