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| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2008-02-15 12:47:21 -0500 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2008-02-15 12:47:21 -0500 |
| commit | 55bd725aa3a83b3935988f37275b5a80e10d4169 (patch) | |
| tree | 9e4c092830eafbb0036892d578d4075689ef81df /fs/fifo.c | |
| parent | 642be6ec218b956fbae88304449720f76ba0d578 (diff) | |
ext4: Fix locking hierarchy violation in ext4_fallocate()
ext4_fallocate() was trying to acquire i_data_sem outside of
jbd2_start_transaction/jbd2_journal_stop, which violates ext4's locking
hierarchy. So we take i_mutex to prevent writes and truncates during
the complete fallocate operation, and use ext4_get_block_wrap() which
acquires and releases i_data_sem for each block allocation.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/fifo.c')
0 files changed, 0 insertions, 0 deletions