ext4: Fix insertion point of extent in mext_insert_across_blocks()

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If the leaf node has 2 extent space or fewer and EXT4_IOC_MOVE_EXT
ioctl is called with the file offset where after the 2nd extent
covers, mext_insert_across_blocks() always tries to insert extent into
the first extent.  As a result, the file gets corrupted because of
wrong extent order.  The patch fixes this problem.

Signed-off-by: Akira Fujita <a-fujita@rs.jp.nec.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

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Akira Fujita 2010-03-04 00:31:06 -05:00 • committed by Theodore Ts'o

parent 731eb1a03a

commit 5fd5249aa3

1 changed files with 4 additions and 0 deletions

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fs/ext4/move_extent.c

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