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hfs: convert bitmap_lock in a mutex

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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>
This commit is contained in:
Matthias Kaehlcke
2008-07-25 01:46:34 -07:00
committed by Linus Torvalds
parent de0ca06a99
commit 3084b72de7
3 changed files with 7 additions and 6 deletions
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fs/hfs/bitmap.c
+4 -4
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@@ -145,7 +145,7 @@ u32 hfs_vbm_search_free(struct super_block *sb, u32 goal, u32 *num_bits)
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 @@ u32 hfs_vbm_search_free(struct super_block *sb, u32 goal, u32 *num_bits)
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 @@ int hfs_clear_vbm_bits(struct super_block *sb, u16 start, u16 count)
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 @@ int hfs_clear_vbm_bits(struct super_block *sb, u16 start, u16 count)
}
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;