Hash :
9ccdb211
Author :
Date :
2013-08-13T10:55:37
fileops: stat() before open()ing in git_futils_readbuffer_updated() This reverts refactoring done in 13224ea4aad9a1b3c9cc4c992ceaea9af623e047 that introduces a performance regression for NFS when reading files that don't exist. open() forces a cache invalidation on NFS, while stat()ing a file just uses the cache and is very quick. To give a specific example, say you have a repo with a thousand packed refs. Before this change, looking up every single one ould incur a thousand slow open() calls. With this change, it's a thousand fast stat() calls.
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