Open an exclusive-opened block device for write or open a write-opened
block deviece exclusively cannot make sure it is exclusive enough. So
it may corrupt the block device when some one writing data through the
counterpart raw block device, such as corrupt a mounted file system.
And it is hard to find the bad process who corrupt the device after
something bad happens.
Although we can watch the block device in the user space, we still want
the kernel can give us some messages if that happens for some special
cases. So this patch set want to add some info messages to hint the
potential data corruption.
zhangyi (F) (2):
block: add info when opening an exclusive opened block device for
write
block: add info when opening a write opend block device exclusively
fs/block_dev.c | 38 +++++++++++++++++++++++++++++++++++---
include/linux/fs.h | 1 +
2 files changed, 36 insertions(+), 3 deletions(-)
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2.7.4
