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hfs: convert extents_lock in a mutex 

Apple Macintosh file system: The semaphore extens_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 01:46:35 -07:00 committed by Linus Torvalds
parent 3084b72de7
commit 39f8d472f2
4 changed files with 11 additions and 11 deletions
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2
fs/hfs/btree.c
View File

@ -40,7 +40,7 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id, btree_keycmp ke
{
struct hfs_mdb *mdb = HFS_SB(sb)->mdb;
HFS_I(tree->inode)->flags = 0;
init_MUTEX(&HFS_I(tree->inode)->extents_lock);
mutex_init(&HFS_I(tree->inode)->extents_lock);
switch (id) {
case HFS_EXT_CNID:
hfs_inode_read_fork(tree->inode, mdb->drXTExtRec, mdb->drXTFlSize,

14
fs/hfs/extent.c
View File

@ -343,16 +343,16 @@ int hfs_get_block(struct inode *inode, sector_t block,
goto done;
}
down(&HFS_I(inode)->extents_lock);
mutex_lock(&HFS_I(inode)->extents_lock);
res = hfs_ext_read_extent(inode, ablock);
if (!res)
dblock = hfs_ext_find_block(HFS_I(inode)->cached_extents,
ablock - HFS_I(inode)->cached_start);
else {
up(&HFS_I(inode)->extents_lock);
mutex_unlock(&HFS_I(inode)->extents_lock);
return -EIO;
}
up(&HFS_I(inode)->extents_lock);
mutex_unlock(&HFS_I(inode)->extents_lock);
done:
map_bh(bh_result, sb, HFS_SB(sb)->fs_start +
@ -375,7 +375,7 @@ int hfs_extend_file(struct inode *inode)
u32 start, len, goal;
int res;
down(&HFS_I(inode)->extents_lock);
mutex_lock(&HFS_I(inode)->extents_lock);
if (HFS_I(inode)->alloc_blocks == HFS_I(inode)->first_blocks)
goal = hfs_ext_lastblock(HFS_I(inode)->first_extents);
else {
@ -425,7 +425,7 @@ int hfs_extend_file(struct inode *inode)
goto insert_extent;
}
out:
up(&HFS_I(inode)->extents_lock);
mutex_unlock(&HFS_I(inode)->extents_lock);
if (!res) {
HFS_I(inode)->alloc_blocks += len;
mark_inode_dirty(inode);
@ -487,7 +487,7 @@ void hfs_file_truncate(struct inode *inode)
if (blk_cnt == alloc_cnt)
goto out;
down(&HFS_I(inode)->extents_lock);
mutex_lock(&HFS_I(inode)->extents_lock);
hfs_find_init(HFS_SB(sb)->ext_tree, &fd);
while (1) {
if (alloc_cnt == HFS_I(inode)->first_blocks) {
@ -514,7 +514,7 @@ void hfs_file_truncate(struct inode *inode)
hfs_brec_remove(&fd);
}
hfs_find_exit(&fd);
up(&HFS_I(inode)->extents_lock);
mutex_unlock(&HFS_I(inode)->extents_lock);
HFS_I(inode)->alloc_blocks = blk_cnt;
out:

2
fs/hfs/hfs_fs.h
View File

@ -54,7 +54,7 @@ struct hfs_inode_info {
struct list_head open_dir_list;
struct inode *rsrc_inode;
struct semaphore extents_lock;
struct mutex extents_lock;
u16 alloc_blocks, clump_blocks;
sector_t fs_blocks;

4
fs/hfs/inode.c
View File

@ -150,7 +150,7 @@ struct inode *hfs_new_inode(struct inode *dir, struct qstr *name, int mode)
if (!inode)
return NULL;
init_MUTEX(&HFS_I(inode)->extents_lock);
mutex_init(&HFS_I(inode)->extents_lock);
INIT_LIST_HEAD(&HFS_I(inode)->open_dir_list);
hfs_cat_build_key(sb, (btree_key *)&HFS_I(inode)->cat_key, dir->i_ino, name);
inode->i_ino = HFS_SB(sb)->next_id++;
@ -281,7 +281,7 @@ static int hfs_read_inode(struct inode *inode, void *data)
HFS_I(inode)->flags = 0;
HFS_I(inode)->rsrc_inode = NULL;
init_MUTEX(&HFS_I(inode)->extents_lock);
mutex_init(&HFS_I(inode)->extents_lock);
INIT_LIST_HEAD(&HFS_I(inode)->open_dir_list);
/* Initialize the inode */