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9d36cdb650
For a Case Insensitive file system we must avoid creating negative entries in the dentry cache. We must also pass the FIGNORECASE into zfs_lookup so that special files are handled correctly. We must also prevent negative dentries from being created when files are unlinked. Tested by running fsstress from LTP (10 loops, 10 processes, 10,000 ops.) Also tested with printks (now removed) to ensure that lookups come to zpl_lookup when negative should not exist. Tests: 1. ls Some-file.txt; touch some-file.txt; ls Some-file.txt and ensure no errors. 2. touch Some-file.txt; rm some-file.txt; ls Some-file.txt and ensure that the last ls shows log messages showing the lookup went all the way to zpl_lookup. Thanks to tuxoko for helping me get this correct. Signed-off-by: Richard Sharpe <realrichardsharpe@gmail.com> Signed-off-by: Chunwei Chen <tuxoko@gmail.com> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #4243 |
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