lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

UBI: add ubi_leb_map interface

Browse Source 
The idea of this interface belongs to Adrian Hunter. The
interface is extremely useful when one has to have a guarantee
that an LEB will contain all 0xFFs even in case of an unclean
reboot. UBI does have an 'ubi_leb_erase()' call which may do
this, but it is stupid and ineffecient, because it flushes whole
queue. I should be re-worked to just be a pair of unmap,
map calls.

The user of the interfaci is UBIFS at the moment.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
This commit is contained in:
Artem Bityutskiy
2007-12-06 18:47:30 +02:00
parent 94780d4de2
commit 393852ecfe
3 changed files with 54 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/mtd/ubi/eba.c
View File

@@ -656,11 +656,14 @@ retry:
goto write_error;
}
err = ubi_io_write_data(ubi, buf, pnum, offset, len);
if (err) {
ubi_warn("failed to write %d bytes at offset %d of LEB %d:%d, "
"PEB %d", len, offset, vol_id, lnum, pnum);
goto write_error;
if (len) {
err = ubi_io_write_data(ubi, buf, pnum, offset, len);
if (err) {
ubi_warn("failed to write %d bytes at offset %d of "
"LEB %d:%d, PEB %d", len, offset, vol_id,
lnum, pnum);
goto write_error;
}
}
vol->eba_tbl[lnum] = pnum;