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authorTheodore Ts'o <tytso@mit.edu>2014-03-24 14:43:12 -0400
committerTheodore Ts'o <tytso@mit.edu>2014-03-24 14:43:12 -0400
commit5f16f3225b06242a9ee876f07c1c9b6ed36a22b6 (patch)
treecebecf399c2d9ef5b0a24902638cb37d2e9e092b /Kconfig
parented3654eb981fd44694b4d2a636e13f998bc10e7f (diff)
downloadlinux-5f16f3225b06242a9ee876f07c1c9b6ed36a22b6.tar.bz2
ext4: atomically set inode->i_flags in ext4_set_inode_flags()
Use cmpxchg() to atomically set i_flags instead of clearing out the S_IMMUTABLE, S_APPEND, etc. flags and then setting them from the EXT4_IMMUTABLE_FL, EXT4_APPEND_FL flags, since this opens up a race where an immutable file has the immutable flag cleared for a brief window of time. Reported-by: John Sullivan <jsrhbz@kanargh.force9.co.uk> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: stable@kernel.org
Diffstat (limited to 'Kconfig')
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