Re: [PATCH v12 00/10] enable bs > ps in XFS

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Okay, I think there is a bug in your patches also.  If I do:

	xfs_io -t -f -c "pwrite -S 0x58 0 40" -c "fsync" \
		-c "truncate 4" -c "truncate 4096" \
		/xfstest.test/wubble; od /xfstest.test/wubble

I see:

  xfs_io-6059: netfs_truncate: ni=9e isz=1000 rsz=1000 zp=0 to=0
  xfs_io-6059: netfs_set_size: ni=9e resize-file isz=0 rsz=0 zp=0
  xfs_io-6059: netfs_write_iter: WRITE-ITER i=9e s=0 l=28 f=0
  xfs_io-6059: netfs_folio: pfn=10d996 i=0009e ix=00000-00001 mod-n-clear d=5858585858585858
  xfs_io-6059: netfs_write: R=0000000c WRITEBACK c=00000002 i=9e by=0-ffffffffffffffff
  xfs_io-6059: netfs_folio: pfn=10d996 i=0009e ix=00000-00001 store d=5858585858585858
  xfs_io-6059: netfs_sreq: R=0000000c[1] UPLD PREP  f=00 s=0 0/0 e=0
  xfs_io-6059: netfs_sreq: R=0000000c[1] UPLD SUBMT f=100 s=0 0/28 e=0
 kworker-5948: netfs_sreq: R=0000000c[1] UPLD TERM  f=100 s=0 28/28 e=0
 kworker-5948: netfs_rreq: R=0000000c WB COLLECT f=2120
 kworker-5948: netfs_sreq: R=0000000c[1] UPLD FREE  f=00 s=0 28/28 e=0
 kworker-5948: netfs_folio: pfn=10d996 i=0009e ix=00000-00001 clear d=5858585858585858
 kworker-5948: netfs_rreq: R=0000000c WB WR-DONE f=2120
 kworker-5948: netfs_rreq: R=0000000c WB WAKE-IP f=2120
 kworker-5948: netfs_rreq: R=0000000c WB FREE    f=2100
  xfs_io-6059: netfs_truncate: ni=9e isz=28 rsz=28 zp=0 to=4
  xfs_io-6059: netfs_set_size: ni=9e resize-file isz=4 rsz=4 zp=0

But ->release_folio() should have been called here because netfs_inode_init()
would have called mapping_set_release_always() for ordinary afs files.

  xfs_io-6059: netfs_truncate: ni=9e isz=4 rsz=4 zp=0 to=1000
  xfs_io-6059: netfs_set_size: ni=9e resize-file isz=1000 rsz=1000 zp=0
      od-6060: netfs_read: R=0000000d READAHEAD c=00000002 ni=9e s=0 l=2000 sz=1000
      od-6060: netfs_folio: pfn=10d996 i=0009e ix=00000-00001 read d=58585858
      od-6060: netfs_sreq: R=0000000d[1] ---- ADD   f=00 s=0 0/2000 e=0
      od-6060: netfs_sreq: R=0000000d[1] ZERO SUBMT f=00 s=0 0/2000 e=0
      od-6060: netfs_sreq: R=0000000d[1] ZERO CLEAR f=02 s=0 2000/2000 e=0
      od-6060: netfs_folio: pfn=10d996 i=0009e ix=00000-00001 read-done d=0
      od-6060: netfs_folio: pfn=10d996 i=0009e ix=00000-00001 read-unlock d=0
      od-6060: netfs_sreq: R=0000000d[1] ZERO TERM  f=02 s=0 2000/2000 e=0
      od-6060: netfs_sreq: R=0000000d[1] ZERO FREE  f=02 s=0 2000/2000 e=0
      od-6060: netfs_rreq: R=0000000d RA ASSESS  f=20
      od-6060: netfs_rreq: R=0000000d RA WAKE-IP f=20
      od-6060: netfs_rreq: R=0000000d RA DONE    f=00
      od-6060: netfs_folio: pfn=10d996 i=0009e ix=00000-00001 read-put d=0
 kworker-5948: netfs_rreq: R=0000000d RA FREE    f=00

David






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