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authorLinus Torvalds <torvalds@linux-foundation.org>2008-11-06 18:43:13 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2008-11-06 18:43:13 -0500
commitc36194871293100bd4b2ecb54ac9774d6e627aa2 (patch)
tree9fd6894103918f439d0e7ec35620e18018ccfa76 /fs/jffs2
parentc3302931db090d87e9015c3a7ce5c97a7dd90f78 (diff)
parentdc8a0843a435b2c0891e7eaea64faaf1ebec9b11 (diff)
Merge git://git.infradead.org/mtd-2.6
* git://git.infradead.org/mtd-2.6: [JFFS2] fix race condition in jffs2_lzo_compress() [MTD] [NOR] Fix cfi_send_gen_cmd handling of x16 devices in x8 mode (v4) [JFFS2] Fix lack of locking in thread_should_wake() [JFFS2] Fix build failure with !CONFIG_JFFS2_FS_WRITEBUFFER [MTD] [NAND] OMAP2: remove duplicated #include
Diffstat (limited to 'fs/jffs2')
-rw-r--r--fs/jffs2/background.c10
-rw-r--r--fs/jffs2/compr_lzo.c15
-rw-r--r--fs/jffs2/nodemgmt.c2
3 files changed, 16 insertions, 11 deletions
diff --git a/fs/jffs2/background.c b/fs/jffs2/background.c
index 8adebd3e43c..3cceef4ad2b 100644
--- a/fs/jffs2/background.c
+++ b/fs/jffs2/background.c
@@ -85,15 +85,15 @@ static int jffs2_garbage_collect_thread(void *_c)
85 for (;;) { 85 for (;;) {
86 allow_signal(SIGHUP); 86 allow_signal(SIGHUP);
87 again: 87 again:
88 spin_lock(&c->erase_completion_lock);
88 if (!jffs2_thread_should_wake(c)) { 89 if (!jffs2_thread_should_wake(c)) {
89 set_current_state (TASK_INTERRUPTIBLE); 90 set_current_state (TASK_INTERRUPTIBLE);
91 spin_unlock(&c->erase_completion_lock);
90 D1(printk(KERN_DEBUG "jffs2_garbage_collect_thread sleeping...\n")); 92 D1(printk(KERN_DEBUG "jffs2_garbage_collect_thread sleeping...\n"));
91 /* Yes, there's a race here; we checked jffs2_thread_should_wake()
92 before setting current->state to TASK_INTERRUPTIBLE. But it doesn't
93 matter - We don't care if we miss a wakeup, because the GC thread
94 is only an optimisation anyway. */
95 schedule(); 93 schedule();
96 } 94 } else
95 spin_unlock(&c->erase_completion_lock);
96
97 97
98 /* This thread is purely an optimisation. But if it runs when 98 /* This thread is purely an optimisation. But if it runs when
99 other things could be running, it actually makes things a 99 other things could be running, it actually makes things a
diff --git a/fs/jffs2/compr_lzo.c b/fs/jffs2/compr_lzo.c
index 47b045797e4..90cb60d0978 100644
--- a/fs/jffs2/compr_lzo.c
+++ b/fs/jffs2/compr_lzo.c
@@ -19,7 +19,7 @@
19 19
20static void *lzo_mem; 20static void *lzo_mem;
21static void *lzo_compress_buf; 21static void *lzo_compress_buf;
22static DEFINE_MUTEX(deflate_mutex); 22static DEFINE_MUTEX(deflate_mutex); /* for lzo_mem and lzo_compress_buf */
23 23
24static void free_workspace(void) 24static void free_workspace(void)
25{ 25{
@@ -49,18 +49,21 @@ static int jffs2_lzo_compress(unsigned char *data_in, unsigned char *cpage_out,
49 49
50 mutex_lock(&deflate_mutex); 50 mutex_lock(&deflate_mutex);
51 ret = lzo1x_1_compress(data_in, *sourcelen, lzo_compress_buf, &compress_size, lzo_mem); 51 ret = lzo1x_1_compress(data_in, *sourcelen, lzo_compress_buf, &compress_size, lzo_mem);
52 mutex_unlock(&deflate_mutex);
53
54 if (ret != LZO_E_OK) 52 if (ret != LZO_E_OK)
55 return -1; 53 goto fail;
56 54
57 if (compress_size > *dstlen) 55 if (compress_size > *dstlen)
58 return -1; 56 goto fail;
59 57
60 memcpy(cpage_out, lzo_compress_buf, compress_size); 58 memcpy(cpage_out, lzo_compress_buf, compress_size);
61 *dstlen = compress_size; 59 mutex_unlock(&deflate_mutex);
62 60
61 *dstlen = compress_size;
63 return 0; 62 return 0;
63
64 fail:
65 mutex_unlock(&deflate_mutex);
66 return -1;
64} 67}
65 68
66static int jffs2_lzo_decompress(unsigned char *data_in, unsigned char *cpage_out, 69static int jffs2_lzo_decompress(unsigned char *data_in, unsigned char *cpage_out,
diff --git a/fs/jffs2/nodemgmt.c b/fs/jffs2/nodemgmt.c
index 0875b60b4bf..21a052915aa 100644
--- a/fs/jffs2/nodemgmt.c
+++ b/fs/jffs2/nodemgmt.c
@@ -261,9 +261,11 @@ static int jffs2_find_nextblock(struct jffs2_sb_info *c)
261 261
262 jffs2_sum_reset_collected(c->summary); /* reset collected summary */ 262 jffs2_sum_reset_collected(c->summary); /* reset collected summary */
263 263
264#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
264 /* adjust write buffer offset, else we get a non contiguous write bug */ 265 /* adjust write buffer offset, else we get a non contiguous write bug */
265 if (!(c->wbuf_ofs % c->sector_size) && !c->wbuf_len) 266 if (!(c->wbuf_ofs % c->sector_size) && !c->wbuf_len)
266 c->wbuf_ofs = 0xffffffff; 267 c->wbuf_ofs = 0xffffffff;
268#endif
267 269
268 D1(printk(KERN_DEBUG "jffs2_find_nextblock(): new nextblock = 0x%08x\n", c->nextblock->offset)); 270 D1(printk(KERN_DEBUG "jffs2_find_nextblock(): new nextblock = 0x%08x\n", c->nextblock->offset));
269 271