diff options
| -rw-r--r-- | ext2fs/ext2fs.h | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/ext2fs/ext2fs.h b/ext2fs/ext2fs.h index 7e5c6613..13e3f0cb 100644 --- a/ext2fs/ext2fs.h +++ b/ext2fs/ext2fs.h @@ -1,5 +1,9 @@ -/* - Copyright (C) 1994, 1995 Free Software Foundation, Inc. +/* Common definitions, declarations & inline routines for the ext2 filesystem + translator. + + Copyright (C) 1995 Free Software Foundation, Inc. + + Written by Miles Bader <miles@gnu.ai.mit.edu> This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as @@ -76,7 +80,8 @@ test_bit (unsigned num, char *bitmap) return bitmap[num >> 3] & (1 << (num & 0x7)); } -/* Sets bit NUM in BITMAP, and returns the previous state of the bit. */ +/* Sets bit NUM in BITMAP, and returns the previous state of the bit. Unlike + the linux version, this function is NOT atomic! */ extern inline int set_bit (unsigned num, char *bitmap) { @@ -93,7 +98,8 @@ set_bit (unsigned num, char *bitmap) } } -/* Clears bit NUM in BITMAP, and returns the previous state of the bit. */ +/* Clears bit NUM in BITMAP, and returns the previous state of the bit. + Unlike the linux version, this function is NOT atomic! */ extern inline int clear_bit (unsigned num, char *bitmap) { @@ -353,7 +359,7 @@ struct pokel global_pokel; record which disk blocks are actually modified, so we don't stomp on parts of the disk which are backed by file pagers. */ char *modified_global_blocks; -spin_lock_t modified_global_blocks_lock; +struct mutex modified_global_blocks_lock; /* Marks the global block BLOCK as being modified, and returns true if we think it may have been clean before (but we may not be sure). Note that @@ -365,9 +371,9 @@ global_block_modified (block_t block) if (modified_global_blocks) { int was_clean; - spin_lock (&modified_global_blocks_lock); + mutex_lock (&modified_global_blocks_lock); was_clean = !set_bit(block, modified_global_blocks); - spin_unlock (&modified_global_blocks_lock); + mutex_unlock (&modified_global_blocks_lock); return was_clean; } else |