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authorJoel Becker <joel.becker@oracle.com>2008-11-13 14:49:19 -0800
committerMark Fasheh <mfasheh@suse.com>2009-01-05 08:36:53 -0800
commit970e4936d7d15f35d00fd15a14f5343ba78b2fc8 (patch)
tree92057c7deab6b9d8e5c3889d6a354b5989a3b68d /fs/ocfs2/extent_map.h
parent4ae1d69bedc8d174cb8a558694607e013157cde1 (diff)
ocfs2: Validate metadata only when it's read from disk.
Add an optional validation hook to ocfs2_read_blocks(). Now the validation function is only called when a block was actually read off of disk. It is not called when the buffer was in cache. We add a buffer state bit BH_NeedsValidate to flag these buffers. It must always be one higher than the last JBD2 buffer state bit. The dinode, dirblock, extent_block, and xattr_block validators are lifted to this scheme directly. The group_descriptor validator needs to be split into two pieces. The first part only needs the gd buffer and is passed to ocfs2_read_block(). The second part requires the dinode as well, and is called every time. It's only 3 compares, so it's tiny. This also allows us to clean up the non-fatal gd check used by resize.c. It now has no magic argument. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Diffstat (limited to 'fs/ocfs2/extent_map.h')
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