Btrfs: create a pinned em when writing to a prealloc range in DIO

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Wade Cline reported a problem where he was getting garbage and warnings when
writing to a preallocated range via O_DIRECT.  This is because we weren't
creating our normal pinned extent_map for the range we were writing to,
which was causing all sorts of issues.  This patch fixes the problem and
makes his testcase much happier.  Thanks,

Reported-by: Wade Cline <clinew@linux.vnet.ibm.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>

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Josef Bacik 2012-09-11 15:40:07 -04:00 • committed by Chris Mason

parent 6df7881a84

commit 69ffb54347

1 changed files with 55 additions and 0 deletions

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fs/btrfs/inode.c

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