Btrfs: Fix race against disk_i_size updates

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The code to update the on disk i_size happens before the
ordered_extent record is removed.  So, it is possible for multiple
ordered_extent completion routines to run at the same time, and to
find each other in the ordered tree.

The end result is they both decide not to update disk_i_size, leaving
it too small.  This temporary fix just puts the updates inside
the extent_mutex.  A real solution would be stronger ordering of
disk_i_size updates against removing the ordered extent from the tree.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

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Chris Mason 2008-09-23 20:19:49 -04:00

parent 31840ae1a6

commit 3435302953

1 changed files with 2 additions and 0 deletions

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fs/btrfs/inode.c

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