GFS2: speed up delete/unlink performance for large files
This patch improves the performance of delete/unlink operations in a GFS2 file system where the files are large by adding a layer of metadata read-ahead for indirect blocks. Mileage will vary, but on my system, deleting an 8.6G file dropped from 22 seconds to about 4.5 seconds. Signed-off-by: NBob Peterson <rpeterso@redhat.com> Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>
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