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UBIFS: remove dead code 

UBIFS assumes that @c->min_io_size is 8 in case of NOR flash. This
is because UBIFS alignes all nodes to 8-byte boundary, and maintaining
@c->min_io_size introduced unnecessary complications.

This patch removes senseless constructs like:

if (c->min_io_size == 1)
	NOR-specific code

Also, few commentaries amendments.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
This commit is contained in:
Artem Bityutskiy 2009-05-25 16:59:28 +03:00
parent 7c83f5cb55
commit 428ff9d2e3
2 changed files with 4 additions and 28 deletions
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1
fs/ubifs/budget.c
View File

@ -91,7 +91,6 @@ static int shrink_liability(struct ubifs_info *c, int nr_to_write)
return nr_written;
}
/**
* run_gc - run garbage collector.
* @c: UBIFS file-system description object

31
fs/ubifs/recovery.c
View File

@ -343,33 +343,15 @@ int ubifs_write_rcvrd_mst_node(struct ubifs_info *c)
*
* This function returns %1 if @offs was in the last write to the LEB whose data
* is in @buf, otherwise %0 is returned. The determination is made by checking
* for subsequent empty space starting from the next min_io_size boundary (or a
* bit less than the common header size if min_io_size is one).
* for subsequent empty space starting from the next @c->min_io_size boundary.
*/
static int is_last_write(const struct ubifs_info *c, void *buf, int offs)
{
int empty_offs;
int check_len;
int empty_offs, check_len;
uint8_t *p;
if (c->min_io_size == 1) {
check_len = c->leb_size - offs;
p = buf + check_len;
for (; check_len > 0; check_len--)
if (*--p != 0xff)
break;
/*
* 'check_len' is the size of the corruption which cannot be
* more than the size of 1 node if it was caused by an unclean
* unmount.
*/
if (check_len > UBIFS_MAX_NODE_SZ)
return 0;
return 1;
}
/*
* Round up to the next c->min_io_size boundary i.e. 'offs' is in the
* Round up to the next @c->min_io_size boundary i.e. @offs is in the
* last wbuf written. After that should be empty space.
*/
empty_offs = ALIGN(offs + 1, c->min_io_size);
@ -392,7 +374,7 @@ static int is_last_write(const struct ubifs_info *c, void *buf, int offs)
*
* This function pads up to the next min_io_size boundary (if there is one) and
* sets empty space to all 0xff. @buf, @offs and @len are updated to the next
* min_io_size boundary (if there is one).
* @c->min_io_size boundary.
*/
static void clean_buf(const struct ubifs_info *c, void **buf, int lnum,
int *offs, int *len)
@ -402,11 +384,6 @@ static void clean_buf(const struct ubifs_info *c, void **buf, int lnum,
lnum = lnum;
dbg_rcvry("cleaning corruption at %d:%d", lnum, *offs);
if (c->min_io_size == 1) {
memset(*buf, 0xff, c->leb_size - *offs);
return;
}
ubifs_assert(!(*offs & 7));
empty_offs = ALIGN(*offs, c->min_io_size);
pad_len = empty_offs - *offs;