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authorErnesto A. Fernández2018-08-21 21:59:16 -0700
committerLinus Torvalds2018-08-22 10:52:50 -0700
commit31651c607151f1034cfb57e5a78678bea54c362b (patch)
treeb8868dcd8dd0330edeec238bb83716be61b3d314 /include/sound
parent7464726cb5998846306ed0a7d6714afb2e37b25d (diff)
hfsplus: avoid deadlock on file truncation
After an extent is removed from the extent tree, the corresponding bits are also cleared from the block allocation file. This is currently done without releasing the tree lock. The problem is that the allocation file has extents of its own; if it is fragmented enough, some of them may be in the extent tree as well, and hfsplus_get_block() will try to take the lock again. To avoid deadlock, only hold the extent tree lock during the actual tree operations. Link: http://lkml.kernel.org/r/20180709202549.auxwkb6memlegb4a@eaf Signed-off-by: Ernesto A. Fernández <ernesto.mnd.fernandez@gmail.com> Reported-by: Anatoly Trosinenko <anatoly.trosinenko@gmail.com> Cc: Viacheslav Dubeyko <slava@dubeyko.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/sound')
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