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(parent: aca92ff) | patch
jbd2: delay discarding buffers in journal_unmap_buffer
authordingdinghua <dingdinghua@nrchpc.ac.cn>
Mon, 15 Feb 2010 21:35:42 +0000 (16:35 -0500)
committerTheodore Ts'o <tytso@mit.edu>
Mon, 15 Feb 2010 21:35:42 +0000 (16:35 -0500)
commitba869023eac8354b17acdcff82b851ea8e7b1809
treec461ae44ed5f9fc45573c14c74548f3f50109547tree | snapshot
parentaca92ff6f57c000d1b4523e383c8bd6b8269b8b1commit | diff
jbd2: delay discarding buffers in journal_unmap_buffer

Delay discarding buffers in journal_unmap_buffer until
we know that "add to orphan" operation has definitely been
committed, otherwise the log space of committing transation
may be freed and reused before truncate get committed, updates
may get lost if crash happens.

Signed-off-by: dingdinghua <dingdinghua@nrchpc.ac.cn>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
fs/jbd2/commit.c diff | blob | history
fs/jbd2/transaction.c diff | blob | history
Domain: System / Kernel;