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When the UBI device is nearly full, i.e. all LEBs are mapped, we have only one spare LEB left - the one we reserved for WL purposes. Well, I do not count the LEBs which were reserved for bad PEB handling - suppose NOR flash for simplicity. If an "atomic LEB change operation" is run, and the WL unit is moving a LEB, we have no spare LEBs to finish the operation and fail, which is not good. Moreover, if there are 2 or more simultanious "atomic LEB change" requests, only one of them has chances to succeed, the other will fail with -ENOSPC. Not good either. This patch does 2 things: 1. Reserves one PEB for the "atomic LEB change" operation. 2. Serealize the operations so that only on of them may run at a time (by means of a mutex). Pointed-to-by: Brijesh Singh <brijesh.s.singh@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> |
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| .. | ||
| build.c | ||
| cdev.c | ||
| debug.c | ||
| debug.h | ||
| eba.c | ||
| gluebi.c | ||
| io.c | ||
| kapi.c | ||
| Kconfig | ||
| Kconfig.debug | ||
| Makefile | ||
| misc.c | ||
| scan.c | ||
| scan.h | ||
| ubi.h | ||
| upd.c | ||
| vmt.c | ||
| vtbl.c | ||
| wl.c | ||