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authorArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2011-05-23 14:30:01 +0300
committerArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2011-05-27 15:55:06 +0300
commitf6f1cd4e2dfa45705dd8179dd332869d0e7e99b8 (patch)
tree7864c34886e6efc2ada8d6bdcf662cfa8d9e43cc /include/linux
parentfdfd2889ad3e59444275e063ada5247727cb079d (diff)
fs-tests: integck: EIO can also be return in power-cut testing
Currently when we are doing UBIFS power cut emulation testing we assume that EROFS is returned in case of an emulated power cut event. However, this is not true and sometimes Linux returns EIO to user-space instead. Namely, this happens when we are waiting for write-back to finish. Here is a call trace form kernel 2.6.39-rc7: Call Trace: [<ffffffff810aaa77>] filemap_write_and_wait_range+0x78/0xb1 [<ffffffff8110f34d>] vfs_fsync_range+0x38/0xd3 [<ffffffff8110f42b>] generic_write_sync+0x43/0x65 [<ffffffff810ab0c9>] generic_file_aio_write+0xaa/0xf2 [<ffffffffa02224c9>] ubifs_aio_write+0x13a/0x1a1 [ubifs] [<ffffffff810ed71f>] do_sync_write+0xcb/0x141 [<ffffffff810ee016>] vfs_write+0xb0/0x150 [<ffffffff810ee175>] sys_write+0x48/0x72 [<ffffffff813e0692>] system_call_fastpath+0x16/0x1b 'filemap_fdatawait_range()' returns hard-coded -EIO if a page write-back happens with whatever error code. Thus, this patch teaches integck to handle EIO when doing power cut emulation testing. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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