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Subject[PATCH 0/1]ext4: Fix for WARN_ON_ONCE when marking buffer dirty
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1) Fix WARN_ON_ONCE when marking buffer dirty
it's possible that a writeback for the super block
buffer head is triggered after setting the buffer
uptodate on a buffer write_io_error.

If however there's an error while writing the buffer
head then the buffer is cleared from being uptodate.

If the buffer uptodate is not set while calling
mark_buffer_dirty, it throws a WARN_ON_ONCE.
This patch fixes it by locking the buffer while marking
the buffer uptodate and then marking it dirty while holding
the buffer head lock.


Pranay Kr. Srivastava (5):
Fix WARN_ON_ONCE when marking buffer dirty

fs/ext4/super.c | 30 +++++-----
1 files changed, 16 insertions(+), 14 deletions(-)

--
1.9.1

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