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staging: lustre: mdc: remove console spew from mdc_ioc_fid2path
In some cases with a very long pathname, such as with sanity.sh test_154c, mdc_ioc_fid2path() would spew long debug messages to the log, because libcfs_debug_vmsg2() refuses to log messages over one page in size. Truncate the debug message to only log the last 512 characters of the pathname, which is sufficient for most debugging, saves a bit of space in the debug log, and will prevent the debug logging from printing to the console in the first place. Signed-off-by: Andreas Dilger <andreas.dilger@intel.com> Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-1095 Reviewed-on: http://review.whamcloud.com/17078 Reviewed-by: Jian Yu <jian.yu@intel.com> Reviewed-by: Niu Yawei <yawei.niu@intel.com> Reviewed-by: Oleg Drokin <oleg.drokin@intel.com> Signed-off-by: James Simmons <jsimmons@infradead.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -1453,8 +1453,11 @@ static int mdc_ioc_fid2path(struct obd_export *exp, struct getinfo_fid2path *gf)
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goto out;
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}
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CDEBUG(D_IOCTL, "path get "DFID" from %llu #%d\n%s\n",
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PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno, gf->gf_path);
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CDEBUG(D_IOCTL, "path got " DFID " from %llu #%d: %s\n",
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PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno,
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gf->gf_pathlen < 512 ? gf->gf_path :
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/* only log the last 512 characters of the path */
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gf->gf_path + gf->gf_pathlen - 512);
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out:
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kfree(key);
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