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Alexey Khoroshilov 9ef7db7f38 ufs: fix deadlocks introduced by sb mutex merge

Commit 0244756edc ("ufs: sb mutex merge + mutex_destroy") introduces
deadlocks in ufs_new_inode() and ufs_free_inode().
Most callers of that functions acqure the mutex by themselves and
ufs_{new,free}_inode() do that via lock_ufs(),
i.e we have an unavoidable double lock.

The patch proposes to resolve the issue by making sure that
ufs_{new,free}_inode() are not called with the mutex held.

Found by Linux Driver Verification project (linuxtesting.org).

Cc: stable@vger.kernel.org # 3.16
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

2014-09-07 13:26:39 -04:00

balloc.c

ufs: sb mutex merge + mutex_destroy

2014-06-06 16:08:18 -07:00

cylinder.c

…

dir.c

…

file.c

write_iter variants of {__,}generic_file_aio_write()

2014-05-06 17:38:00 -04:00

ialloc.c