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Merge git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linus

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* git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linus:
  Squashfs: cody tidying, remove commented out line in Makefile
  Squashfs: check page size is not larger than the filesystem block size
  Squashfs: fix breakage when page size > metadata block size
This commit is contained in:
Linus Torvalds 2009-05-13 16:33:25 -07:00
commit 210af919c9
3 changed files with 11 additions and 1 deletions
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1
fs/squashfs/Makefile
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@ -5,4 +5,3 @@
obj-$(CONFIG_SQUASHFS) += squashfs.o
squashfs-y += block.o cache.o dir.o export.o file.o fragment.o id.o inode.o
squashfs-y += namei.o super.o symlink.o
#squashfs-y += squashfs2_0.o

1
fs/squashfs/cache.c
View File

@ -252,6 +252,7 @@ struct squashfs_cache *squashfs_cache_init(char *name, int entries,
cache->entries = entries;
cache->block_size = block_size;
cache->pages = block_size >> PAGE_CACHE_SHIFT;
cache->pages = cache->pages ? cache->pages : 1;
cache->name = name;
cache->num_waiters = 0;
spin_lock_init(&cache->lock);

10
fs/squashfs/super.c
View File

@ -157,6 +157,16 @@ static int squashfs_fill_super(struct super_block *sb, void *data, int silent)
if (msblk->block_size > SQUASHFS_FILE_MAX_SIZE)
goto failed_mount;
/*
* Check the system page size is not larger than the filesystem
* block size (by default 128K). This is currently not supported.
*/
if (PAGE_CACHE_SIZE > msblk->block_size) {
ERROR("Page size > filesystem block size (%d). This is "
"currently not supported!\n", msblk->block_size);
goto failed_mount;
}
msblk->block_log = le16_to_cpu(sblk->block_log);
if (msblk->block_log > SQUASHFS_FILE_MAX_LOG)
goto failed_mount;