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authorTheodore Ts'o <tytso@mit.edu>2017-11-09 04:23:20 +0100
committerTheodore Ts'o <tytso@mit.edu>2017-11-09 04:23:20 +0100
commit232530680290ba94ca37852ab10d9556ea28badf (patch)
treecf23ba2b6c563adc685f3b9fee830ac7d202546c /fs/ext4/resize.c
parentext4: add support for online resizing with bigalloc (diff)
downloadlinux-232530680290ba94ca37852ab10d9556ea28badf.tar.xz
linux-232530680290ba94ca37852ab10d9556ea28badf.zip
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>
Diffstat (limited to 'fs/ext4/resize.c')
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