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Squashfs: fix breakage when page size > metadata block size

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Squashfs is broken on any system where the page size is larger than
the metadata size (8192).  This is easily fixed by ensuring cache->pages
is always > 0.

[[email protected]: coding-style fixes]
Signed-off-by: Doug Chapman <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Phillip Lougher <[email protected]>
This commit is contained in:
Doug Chapman 2009-05-13 02:56:39 +01:00 • committed by Phillip Lougher
commit a37b06d589
1 changed files with 1 additions and 0 deletions
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1
fs/squashfs/cache.c
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@ -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);