gfs2: Replace gl_revokes with a GLF flag

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The gl_revokes value determines how many outstanding revokes a glock has
on the superblock revokes list; this is used to avoid unnecessary log
flushes.  However, gl_revokes is only ever tested for being zero, and it's
only decremented in revoke_lo_after_commit, which removes all revokes
from the list, so we know that the gl_revoke values of all the glocks on
the list will reach zero.  Therefore, we can replace gl_revokes with a
bit flag. This saves an atomic counter in struct gfs2_glock.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>

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Bob Peterson 2019-04-05 04:41:38 +01:00 • committed by Andreas Gruenbacher

parent 9287c6452d

commit 73118ca8ba

6 changed files with 31 additions and 15 deletions

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4

fs/gfs2/glock.c

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2

fs/gfs2/incore.h

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4

fs/gfs2/log.c

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33

fs/gfs2/lops.c

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1

fs/gfs2/main.c

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2

fs/gfs2/super.c

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