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authorTheodore Ts'o <tytso@mit.edu>2009-01-06 03:34:13 +0100
committerTheodore Ts'o <tytso@mit.edu>2009-01-06 03:34:13 +0100
commitfd98496f467b3d26d05ab1498f41718b5ef13de5 (patch)
tree27e29934f5c2ee5ccc060de27dee261d31d6842c /fs/ext4/xattr_user.c
parentext4: Allow ext4 to run without a journal (diff)
downloadlinux-fd98496f467b3d26d05ab1498f41718b5ef13de5.tar.xz
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jbd2: Add barrier not supported test to journal_wait_on_commit_record
Xen doesn't report that barriers are not supported until buffer I/O is reported as completed, instead of when the buffer I/O is submitted. Add a check and a fallback codepath to journal_wait_on_commit_record() to detect this case, so that attempts to mount ext4 filesystems on LVM/devicemapper devices on Xen guests don't blow up with an "Aborting journal on device XXX"; "Remounting filesystem read-only" error. Thanks to Andreas Sundstrom for reporting this issue. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: stable@kernel.org
Diffstat (limited to 'fs/ext4/xattr_user.c')
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