mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 14:20:55 +07:00
hfsplus: introduce alloc_mutex
Use a new per-sb alloc_mutex instead of abusing i_mutex of the alloc_file to protect block allocations. This gets rid of lockdep nesting warnings and prepares for extending the scope of alloc_mutex. Signed-off-by: Christoph Hellwig <hch@tuxera.com>
This commit is contained in:
parent
6333816ade
commit
40bf48afe9
@ -29,7 +29,7 @@ int hfsplus_block_allocate(struct super_block *sb, u32 size, u32 offset, u32 *ma
|
|||||||
return size;
|
return size;
|
||||||
|
|
||||||
dprint(DBG_BITMAP, "block_allocate: %u,%u,%u\n", size, offset, len);
|
dprint(DBG_BITMAP, "block_allocate: %u,%u,%u\n", size, offset, len);
|
||||||
mutex_lock(&HFSPLUS_SB(sb).alloc_file->i_mutex);
|
mutex_lock(&HFSPLUS_SB(sb).alloc_mutex);
|
||||||
mapping = HFSPLUS_SB(sb).alloc_file->i_mapping;
|
mapping = HFSPLUS_SB(sb).alloc_file->i_mapping;
|
||||||
page = read_mapping_page(mapping, offset / PAGE_CACHE_BITS, NULL);
|
page = read_mapping_page(mapping, offset / PAGE_CACHE_BITS, NULL);
|
||||||
if (IS_ERR(page)) {
|
if (IS_ERR(page)) {
|
||||||
@ -154,7 +154,7 @@ int hfsplus_block_allocate(struct super_block *sb, u32 size, u32 offset, u32 *ma
|
|||||||
sb->s_dirt = 1;
|
sb->s_dirt = 1;
|
||||||
dprint(DBG_BITMAP, "-> %u,%u\n", start, *max);
|
dprint(DBG_BITMAP, "-> %u,%u\n", start, *max);
|
||||||
out:
|
out:
|
||||||
mutex_unlock(&HFSPLUS_SB(sb).alloc_file->i_mutex);
|
mutex_unlock(&HFSPLUS_SB(sb).alloc_mutex);
|
||||||
return start;
|
return start;
|
||||||
}
|
}
|
||||||
|
|
||||||
@ -175,7 +175,7 @@ int hfsplus_block_free(struct super_block *sb, u32 offset, u32 count)
|
|||||||
if ((offset + count) > HFSPLUS_SB(sb).total_blocks)
|
if ((offset + count) > HFSPLUS_SB(sb).total_blocks)
|
||||||
return -2;
|
return -2;
|
||||||
|
|
||||||
mutex_lock(&HFSPLUS_SB(sb).alloc_file->i_mutex);
|
mutex_lock(&HFSPLUS_SB(sb).alloc_mutex);
|
||||||
mapping = HFSPLUS_SB(sb).alloc_file->i_mapping;
|
mapping = HFSPLUS_SB(sb).alloc_file->i_mapping;
|
||||||
pnr = offset / PAGE_CACHE_BITS;
|
pnr = offset / PAGE_CACHE_BITS;
|
||||||
page = read_mapping_page(mapping, pnr, NULL);
|
page = read_mapping_page(mapping, pnr, NULL);
|
||||||
@ -226,7 +226,7 @@ int hfsplus_block_free(struct super_block *sb, u32 offset, u32 count)
|
|||||||
kunmap(page);
|
kunmap(page);
|
||||||
HFSPLUS_SB(sb).free_blocks += len;
|
HFSPLUS_SB(sb).free_blocks += len;
|
||||||
sb->s_dirt = 1;
|
sb->s_dirt = 1;
|
||||||
mutex_unlock(&HFSPLUS_SB(sb).alloc_file->i_mutex);
|
mutex_unlock(&HFSPLUS_SB(sb).alloc_mutex);
|
||||||
|
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
@ -116,6 +116,9 @@ struct hfsplus_sb_info {
|
|||||||
struct inode *hidden_dir;
|
struct inode *hidden_dir;
|
||||||
struct nls_table *nls;
|
struct nls_table *nls;
|
||||||
|
|
||||||
|
/* synchronize block allocations */
|
||||||
|
struct mutex alloc_mutex;
|
||||||
|
|
||||||
/* Runtime variables */
|
/* Runtime variables */
|
||||||
u32 blockoffset;
|
u32 blockoffset;
|
||||||
u32 sect_count;
|
u32 sect_count;
|
||||||
|
@ -321,6 +321,7 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
|
|||||||
|
|
||||||
sb->s_fs_info = sbi;
|
sb->s_fs_info = sbi;
|
||||||
INIT_HLIST_HEAD(&sbi->rsrc_inodes);
|
INIT_HLIST_HEAD(&sbi->rsrc_inodes);
|
||||||
|
mutex_init(&sbi->alloc_mutex);
|
||||||
hfsplus_fill_defaults(sbi);
|
hfsplus_fill_defaults(sbi);
|
||||||
if (!hfsplus_parse_options(data, sbi)) {
|
if (!hfsplus_parse_options(data, sbi)) {
|
||||||
printk(KERN_ERR "hfs: unable to parse mount options\n");
|
printk(KERN_ERR "hfs: unable to parse mount options\n");
|
||||||
|
Loading…
Reference in New Issue
Block a user