hfs: convert bitmap_lock in a mutex
Apple Macintosh file system: The semaphore bitmap_lock is used as a mutex.
Convert it to the mutex API
Signed-off-by: Matthias Kaehlcke <matthias@kaehlcke.net>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/hfs/bitmap.c b/fs/hfs/bitmap.c
index 24e7579..c6e9736 100644
--- a/fs/hfs/bitmap.c
+++ b/fs/hfs/bitmap.c
@@ -145,7 +145,7 @@
if (!*num_bits)
return 0;
- down(&HFS_SB(sb)->bitmap_lock);
+ mutex_lock(&HFS_SB(sb)->bitmap_lock);
bitmap = HFS_SB(sb)->bitmap;
pos = hfs_find_set_zero_bits(bitmap, HFS_SB(sb)->fs_ablocks, goal, num_bits);
@@ -162,7 +162,7 @@
HFS_SB(sb)->free_ablocks -= *num_bits;
hfs_bitmap_dirty(sb);
out:
- up(&HFS_SB(sb)->bitmap_lock);
+ mutex_unlock(&HFS_SB(sb)->bitmap_lock);
return pos;
}
@@ -205,7 +205,7 @@
if ((start + count) > HFS_SB(sb)->fs_ablocks)
return -2;
- down(&HFS_SB(sb)->bitmap_lock);
+ mutex_lock(&HFS_SB(sb)->bitmap_lock);
/* bitmap is always on a 32-bit boundary */
curr = HFS_SB(sb)->bitmap + (start / 32);
len = count;
@@ -236,7 +236,7 @@
}
out:
HFS_SB(sb)->free_ablocks += len;
- up(&HFS_SB(sb)->bitmap_lock);
+ mutex_unlock(&HFS_SB(sb)->bitmap_lock);
hfs_bitmap_dirty(sb);
return 0;
diff --git a/fs/hfs/hfs_fs.h b/fs/hfs/hfs_fs.h
index 147374b..ad6528819 100644
--- a/fs/hfs/hfs_fs.h
+++ b/fs/hfs/hfs_fs.h
@@ -11,6 +11,7 @@
#include <linux/slab.h>
#include <linux/types.h>
+#include <linux/mutex.h>
#include <linux/buffer_head.h>
#include <linux/fs.h>
@@ -139,7 +140,7 @@
struct nls_table *nls_io, *nls_disk;
- struct semaphore bitmap_lock;
+ struct mutex bitmap_lock;
unsigned long flags;
diff --git a/fs/hfs/super.c b/fs/hfs/super.c
index 8cf6797..ac2ec5e 100644
--- a/fs/hfs/super.c
+++ b/fs/hfs/super.c
@@ -372,7 +372,7 @@
sb->s_op = &hfs_super_operations;
sb->s_flags |= MS_NODIRATIME;
- init_MUTEX(&sbi->bitmap_lock);
+ mutex_init(&sbi->bitmap_lock);
res = hfs_mdb_get(sb);
if (res) {