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mtd: mtdblock: call mtd_sync() only if opened for write

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Because it is useless to call it if the device is opened in R/O mode, and also
harmful: on CFI NOR flash it may block for long time waiting for erase
operations to complete is another partition with a R/W file-system on this
chip.

Artem Bityutskiy: write commit message, amend the patch to match the latest
tree (we use mtd_sync(), not mtd->sync() nowadays).

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Alexander Stein 2012-01-10 13:26:58 +01:00 • committed by David Woodhouse
parent 2ff5e1532d
commit 70d5098a4b
3 changed files with 8 additions and 2 deletions
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1
include/linux/mtd/blktrans.h
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@ -47,6 +47,7 @@ struct mtd_blktrans_dev {
struct request_queue *rq;
spinlock_t queue_lock;
void *priv;
fmode_t file_mode;
};
struct mtd_blktrans_ops {