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gfs2: Revert "Fix loop in gfs2_rbm_find"

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commit e74c98ca2d6ae4376cc15fa2a22483430909d96b upstream.

This reverts commit 2d29f6b96d8f80322ed2dd895bca590491c38d34.

It turns out that the fix can lead to a ~20 percent performance regression
in initial writes to the page cache according to iozone.  Let's revert this
for now to have more time for a proper fix.

Cc: stable@vger.kernel.org # v3.13+
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andreas Gruenbacher 2019-01-30 21:30:36 +01:00 committed by Greg Kroah-Hartman
parent 7685bb0efb
commit 970e5c267c
1 changed files with 1 additions and 1 deletions
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2
fs/gfs2/rgrp.c
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@ -1720,9 +1720,9 @@ static int gfs2_rbm_find(struct gfs2_rbm *rbm, u8 state, u32 *minext,
goto next_iter;
}
if (ret == -E2BIG) {
n += rbm->bii - initial_bii;
rbm->bii = 0;
rbm->offset = 0;
n += (rbm->bii - initial_bii);
goto res_covered_end_of_rgrp;
}
return ret;