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(parent: f21db58) | patch
ext4: improve smp scalability for inode generation
authorTheodore Ts'o <tytso@mit.edu>
Thu, 9 Nov 2017 03:23:20 +0000 (22:23 -0500)
committerTheodore Ts'o <tytso@mit.edu>
Thu, 9 Nov 2017 03:23:20 +0000 (22:23 -0500)
commit07218f57faa5d6d42861ccd57ebbd2b2d5333e9c
treecf23ba2b6c563adc685f3b9fee830ac7d202546ctree | snapshot
parentf21db58bd8c7453ff98751ba724b4fdfc57cd96ccommit | diff
ext4: improve smp scalability for inode generation

->s_next_generation is protected by s_next_gen_lock but its usage
pattern is very primitive.  We don't actually need sequentially
increasing new generation numbers, so let's use prandom_u32() instead.

Reported-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
fs/ext4/ext4.h diff | blob | history
fs/ext4/ialloc.c diff | blob | history
fs/ext4/ioctl.c diff | blob | history
fs/ext4/super.c diff | blob | history
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