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https://github.com/torvalds/linux
23 October 2021, 00:29:24 UTC
Revision 4b8222870032715f9d995f3eb7c7acd8379a275d authored by Jeff Layton on 15 April 2019, 16:00:42 UTC, committed by Ilya Dryomov on 23 April 2019, 19:37:54 UTC 
ceph: handle the case where a dentry has been renamed on outstanding req
 
It's possible for us to issue a lookup to revalidate a dentry
concurrently with a rename. If done in the right order, then we could
end up processing dentry info in the reply that no longer reflects the
state of the dentry.

If req->r_dentry->d_name differs from the one in the trace, then just
ignore the trace in the reply. We only need to do this however if the
parent's i_rwsem is not held.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
1 parent 76a495d
History
Tip revision: 4b8222870032715f9d995f3eb7c7acd8379a275d authored by Jeff Layton on 15 April 2019, 16:00:42 UTC
ceph: handle the case where a dentry has been renamed on outstanding req
Tip revision: 4b82228
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ABI
EDID
PCI
RCU
accelerators
accounting
acpi
admin-guide
aoe
arm
arm64
auxdisplay
backlight
block
blockdev
bpf
bus-devices
cdrom
cgroup-v1
cma
connector
console
core-api
cpu-freq
crypto
dev-tools
device-mapper
devicetree
doc-guide
driver-api
driver-model
early-userspace
extcon
fault-injection
fb
features
filesystems
firmware_class
fmc
fpga
gpio
gpu
hid
hwmon
i2c
ia64
ide
iio
infiniband
input
interconnect
ioctl
isdn
kbuild
kdump
kernel-hacking
laptops
leds
lightnvm
livepatch
locking
m68k
maintainer
md
media
memory-devices
mic
mips
misc-devices
mmc
mtd
namespaces
netlabel
networking
nfc
nios2
nvdimm
nvmem
openrisc
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s390
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spi
sysctl
target
thermal
timers
trace
translations
usb
userspace-api
virtual
vm
w1
watchdog
wimax
x86
xilinx
xtensa
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Changes l--------- 19 bytes
CodingStyle -rw-r--r-- 48 bytes
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DMA-API.txt -rw-r--r-- 27.5 KB
DMA-ISA-LPC.txt -rw-r--r-- 5.1 KB
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IPMI.txt -rw-r--r-- 29.7 KB
IRQ-affinity.txt -rw-r--r-- 2.5 KB
IRQ-domain.txt -rw-r--r-- 10.9 KB
IRQ.txt -rw-r--r-- 994 bytes
Intel-IOMMU.txt -rw-r--r-- 3.9 KB
Makefile -rw-r--r-- 4.5 KB
SAK.txt -rw-r--r-- 3.0 KB
SM501.txt -rw-r--r-- 2.8 KB
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atomic_bitops.txt -rw-r--r-- 1.5 KB
atomic_t.txt -rw-r--r-- 5.5 KB
bt8xxgpio.txt -rw-r--r-- 4.0 KB
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clearing-warn-once.txt -rw-r--r-- 224 bytes
conf.py -rw-r--r-- 19.3 KB
cpu-load.txt -rw-r--r-- 3.0 KB
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crc32.txt -rw-r--r-- 8.6 KB
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debugging-modules.txt -rw-r--r-- 954 bytes
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intel_txt.txt -rw-r--r-- 10.3 KB
io-mapping.txt -rw-r--r-- 3.3 KB
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irqflags-tracing.txt -rw-r--r-- 2.3 KB
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kernel-per-CPU-kthreads.txt -rw-r--r-- 13.3 KB
kobject.txt -rw-r--r-- 18.5 KB
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phy.txt -rw-r--r-- 7.8 KB
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pnp.txt -rw-r--r-- 7.0 KB
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robust-futexes.txt -rw-r--r-- 9.5 KB
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smsc_ece1099.txt -rw-r--r-- 2.5 KB
speculation.txt -rw-r--r-- 2.8 KB
static-keys.txt -rw-r--r-- 13.0 KB
svga.txt -rw-r--r-- 11.8 KB
switchtec.txt -rw-r--r-- 4.0 KB
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vfio.txt -rw-r--r-- 21.2 KB
video-output.txt -rw-r--r-- 1.1 KB
xillybus.txt -rw-r--r-- 17.6 KB
xz.txt -rw-r--r-- 5.5 KB
zorro.txt -rw-r--r-- 2.9 KB
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