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authorJaegeuk Kim <jaegeuk.kim@samsung.com>2013-05-07 13:47:40 +0200
committerJaegeuk Kim <jaegeuk.kim@samsung.com>2013-05-08 12:54:22 +0200
commit59bbd474abb9dd6a0c1a74df758ec29c7a8b150f (patch)
tree0e1f7f74108b0e9cc4a7aa8a9d80e333344a366a /Documentation/devicetree/bindings/sound
parentf2fs: optimize scan_nat_page() (diff)
downloadlinux-59bbd474abb9dd6a0c1a74df758ec29c7a8b150f.tar.xz
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f2fs: cover free_nid management with spin_lock
After build_free_nids() searches free nid candidates from nat pages and current journal blocks, it checks all the candidates if they are allocated so that the nat cache has its nid with an allocated block address. In this procedure, previously we used list_for_each_entry_safe(fnid, next_fnid, &nm_i->free_nid_list, list). But, this is not covered by free_nid_list_lock, resulting in null pointer bug. This patch moves this checking routine inside add_free_nid() in order not to use the spin_lock. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
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