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| author | Bhavesh Parekh <bparekh@nvidia.com> | 2011-11-30 17:43:42 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2012-01-25 17:24:37 -0800 |
| commit | 75947f78d026b6eb2c4f16c54042325f97e3288a (patch) | |
| tree | 4d81b1db35ca49ad96149cb6ca58c73572f2d3a2 /drivers/mtd | |
| parent | 729a9768761809079d07c9716f656da20a14eb2f (diff) | |
| download | kernel_samsung_smdk4412-75947f78d026b6eb2c4f16c54042325f97e3288a.tar.gz kernel_samsung_smdk4412-75947f78d026b6eb2c4f16c54042325f97e3288a.tar.bz2 kernel_samsung_smdk4412-75947f78d026b6eb2c4f16c54042325f97e3288a.zip | |
UBI: fix missing scrub when there is a bit-flip
commit e801e128b2200c40a0ec236cf2330b2586b6e05a upstream.
Under some cases, when scrubbing the PEB if we did not get the lock on
the PEB it fails to scrub. Add that PEB again to the scrub list
Artem: minor amendments.
Signed-off-by: Bhavesh Parekh <bparekh@nvidia.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/ubi/eba.c | 6 | ||||
| -rw-r--r-- | drivers/mtd/ubi/ubi.h | 2 | ||||
| -rw-r--r-- | drivers/mtd/ubi/wl.c | 5 |
3 files changed, 10 insertions, 3 deletions
diff --git a/drivers/mtd/ubi/eba.c b/drivers/mtd/ubi/eba.c index 4be67181501..c696c9481c9 100644 --- a/drivers/mtd/ubi/eba.c +++ b/drivers/mtd/ubi/eba.c @@ -1028,12 +1028,14 @@ int ubi_eba_copy_leb(struct ubi_device *ubi, int from, int to, * 'ubi_wl_put_peb()' function on the @ubi->move_mutex. In turn, we are * holding @ubi->move_mutex and go sleep on the LEB lock. So, if the * LEB is already locked, we just do not move it and return - * %MOVE_CANCEL_RACE, which means that UBI will re-try, but later. + * %MOVE_RETRY. Note, we do not return %MOVE_CANCEL_RACE here because + * we do not know the reasons of the contention - it may be just a + * normal I/O on this LEB, so we want to re-try. */ err = leb_write_trylock(ubi, vol_id, lnum); if (err) { dbg_wl("contention on LEB %d:%d, cancel", vol_id, lnum); - return MOVE_CANCEL_RACE; + return MOVE_RETRY; } /* diff --git a/drivers/mtd/ubi/ubi.h b/drivers/mtd/ubi/ubi.h index c6c22295898..bbfa88d459e 100644 --- a/drivers/mtd/ubi/ubi.h +++ b/drivers/mtd/ubi/ubi.h @@ -121,6 +121,7 @@ enum { * PEB * MOVE_CANCEL_BITFLIPS: canceled because a bit-flip was detected in the * target PEB + * MOVE_RETRY: retry scrubbing the PEB */ enum { MOVE_CANCEL_RACE = 1, @@ -128,6 +129,7 @@ enum { MOVE_TARGET_RD_ERR, MOVE_TARGET_WR_ERR, MOVE_CANCEL_BITFLIPS, + MOVE_RETRY, }; /** diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c index ff2c4956eef..f268adeb95e 100644 --- a/drivers/mtd/ubi/wl.c +++ b/drivers/mtd/ubi/wl.c @@ -792,7 +792,10 @@ static int wear_leveling_worker(struct ubi_device *ubi, struct ubi_work *wrk, protect = 1; goto out_not_moved; } - + if (err == MOVE_RETRY) { + scrubbing = 1; + goto out_not_moved; + } if (err == MOVE_CANCEL_BITFLIPS || err == MOVE_TARGET_WR_ERR || err == MOVE_TARGET_RD_ERR) { /* |