16c00db4bb
Pull AFS fixes from David Howells: "Here's a set of patches that fix a number of bugs in the in-kernel AFS client, including: - Fix directory locking to not use individual page locks for directory reading/scanning but rather to use a semaphore on the afs_vnode struct as the directory contents must be read in a single blob and data from different reads must not be mixed as the entire contents may be shuffled about between reads. - Fix address list parsing to handle port specifiers correctly. - Only give up callback records on a server if we actually talked to that server (we might not be able to access a server). - Fix some callback handling bugs, including refcounting, whole-volume callbacks and when callbacks actually get broken in response to a CB.CallBack op. - Fix some server/address rotation bugs, including giving up if we can't probe a server; giving up if a server says it doesn't have a volume, but there are more servers to try. - Fix the decoding of fetched statuses to be OpenAFS compatible. - Fix the handling of server lookups in Cache Manager ops (such as CB.InitCallBackState3) to use a UUID if possible and to handle no server being found. - Fix a bug in server lookup where not all addresses are compared. - Fix the non-encryption of calls that prevents some servers from being accessed (this also requires an AF_RXRPC patch that has already gone in through the net tree). There's also a patch that adds tracepoints to log Cache Manager ops that don't find a matching server, either by UUID or by address" * tag 'afs-fixes-20180514' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs: afs: Fix the non-encryption of calls afs: Fix CB.CallBack handling afs: Fix whole-volume callback handling afs: Fix afs_find_server search loop afs: Fix the handling of an unfound server in CM operations afs: Add a tracepoint to record callbacks from unlisted servers afs: Fix the handling of CB.InitCallBackState3 to find the server by UUID afs: Fix VNOVOL handling in address rotation afs: Fix AFSFetchStatus decoder to provide OpenAFS compatibility afs: Fix server rotation's handling of fileserver probe failure afs: Fix refcounting in callback registration afs: Fix giving up callbacks on server destruction afs: Fix address list parsing afs: Fix directory page locking
41 lines
1.2 KiB
Bash
Executable file
41 lines
1.2 KiB
Bash
Executable file
# Use vfs_getname probe to get syscall args filenames
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# Uses the 'perf test shell' library to add probe:vfs_getname to the system
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# then use it with 'perf record' using 'touch' to write to a temp file, then
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# checks that that was captured by the vfs_getname probe in the generated
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# perf.data file, with the temp file name as the pathname argument.
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# Arnaldo Carvalho de Melo <acme@kernel.org>, 2017
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. $(dirname $0)/lib/probe.sh
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skip_if_no_perf_probe || exit 2
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. $(dirname $0)/lib/probe_vfs_getname.sh
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perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
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file=$(mktemp /tmp/temporary_file.XXXXX)
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record_open_file() {
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echo "Recording open file:"
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perf record -o ${perfdata} -e probe:vfs_getname touch $file
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}
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perf_script_filenames() {
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echo "Looking at perf.data file for vfs_getname records for the file we touched:"
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perf script -i ${perfdata} | \
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egrep " +touch +[0-9]+ +\[[0-9]+\] +[0-9]+\.[0-9]+: +probe:vfs_getname: +\([[:xdigit:]]+\) +pathname=\"${file}\""
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}
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add_probe_vfs_getname || skip_if_no_debuginfo
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err=$?
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if [ $err -ne 0 ] ; then
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exit $err
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fi
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record_open_file && perf_script_filenames
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err=$?
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rm -f ${perfdata}
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rm -f ${file}
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cleanup_probe_vfs_getname
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exit $err
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