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yaml
---
r: 250459
b: refs/heads/master
c: e11602e
h: refs/heads/master
i:
  250457: 55be22e
  250455: 8975eef
v: v3
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Artem Bityutskiy authored and Artem Bityutskiy committed May 16, 2011
1 parent 3eecfa8 commit 949caf3
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Showing 3 changed files with 25 additions and 22 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 91c66083fca36cdf496e927ef8bea19e6b1bbdce
refs/heads/master: e11602ea3e43392904db7a579dc990062ebb7151
28 changes: 7 additions & 21 deletions trunk/fs/ubifs/log.c
Original file line number Diff line number Diff line change
Expand Up @@ -99,20 +99,6 @@ struct ubifs_wbuf *ubifs_get_wbuf(struct ubifs_info *c, int lnum)
return NULL;
}

/**
* next_log_lnum - switch to the next log LEB.
* @c: UBIFS file-system description object
* @lnum: current log LEB
*/
static inline int next_log_lnum(const struct ubifs_info *c, int lnum)
{
lnum += 1;
if (lnum > c->log_last)
lnum = UBIFS_LOG_LNUM;

return lnum;
}

/**
* empty_log_bytes - calculate amount of empty space in the log.
* @c: UBIFS file-system description object
Expand Down Expand Up @@ -257,7 +243,7 @@ int ubifs_add_bud_to_log(struct ubifs_info *c, int jhead, int lnum, int offs)
ref->jhead = cpu_to_le32(jhead);

if (c->lhead_offs > c->leb_size - c->ref_node_alsz) {
c->lhead_lnum = next_log_lnum(c, c->lhead_lnum);
c->lhead_lnum = ubifs_next_log_lnum(c, c->lhead_lnum);
c->lhead_offs = 0;
}

Expand Down Expand Up @@ -425,7 +411,7 @@ int ubifs_log_start_commit(struct ubifs_info *c, int *ltail_lnum)

/* Switch to the next log LEB */
if (c->lhead_offs) {
c->lhead_lnum = next_log_lnum(c, c->lhead_lnum);
c->lhead_lnum = ubifs_next_log_lnum(c, c->lhead_lnum);
c->lhead_offs = 0;
}

Expand All @@ -446,7 +432,7 @@ int ubifs_log_start_commit(struct ubifs_info *c, int *ltail_lnum)

c->lhead_offs += len;
if (c->lhead_offs == c->leb_size) {
c->lhead_lnum = next_log_lnum(c, c->lhead_lnum);
c->lhead_lnum = ubifs_next_log_lnum(c, c->lhead_lnum);
c->lhead_offs = 0;
}

Expand Down Expand Up @@ -533,7 +519,7 @@ int ubifs_log_post_commit(struct ubifs_info *c, int old_ltail_lnum)
}
mutex_lock(&c->log_mutex);
for (lnum = old_ltail_lnum; lnum != c->ltail_lnum;
lnum = next_log_lnum(c, lnum)) {
lnum = ubifs_next_log_lnum(c, lnum)) {
dbg_log("unmap log LEB %d", lnum);
err = ubifs_leb_unmap(c, lnum);
if (err)
Expand Down Expand Up @@ -642,7 +628,7 @@ static int add_node(struct ubifs_info *c, void *buf, int *lnum, int *offs,
err = ubifs_leb_change(c, *lnum, buf, sz, UBI_SHORTTERM);
if (err)
return err;
*lnum = next_log_lnum(c, *lnum);
*lnum = ubifs_next_log_lnum(c, *lnum);
*offs = 0;
}
memcpy(buf + *offs, node, len);
Expand Down Expand Up @@ -712,7 +698,7 @@ int ubifs_consolidate_log(struct ubifs_info *c)
ubifs_scan_destroy(sleb);
if (lnum == c->lhead_lnum)
break;
lnum = next_log_lnum(c, lnum);
lnum = ubifs_next_log_lnum(c, lnum);
}
if (offs) {
int sz = ALIGN(offs, c->min_io_size);
Expand All @@ -732,7 +718,7 @@ int ubifs_consolidate_log(struct ubifs_info *c)
/* Unmap remaining LEBs */
lnum = write_lnum;
do {
lnum = next_log_lnum(c, lnum);
lnum = ubifs_next_log_lnum(c, lnum);
err = ubifs_leb_unmap(c, lnum);
if (err)
return err;
Expand Down
17 changes: 17 additions & 0 deletions trunk/fs/ubifs/misc.h
Original file line number Diff line number Diff line change
Expand Up @@ -340,4 +340,21 @@ static inline void ubifs_release_lprops(struct ubifs_info *c)
mutex_unlock(&c->lp_mutex);
}

/**
* ubifs_next_log_lnum - switch to the next log LEB.
* @c: UBIFS file-system description object
* @lnum: current log LEB
*
* This helper function returns the log LEB number which goes next after LEB
* 'lnum'.
*/
static inline int ubifs_next_log_lnum(const struct ubifs_info *c, int lnum)
{
lnum += 1;
if (lnum > c->log_last)
lnum = UBIFS_LOG_LNUM;

return lnum;
}

#endif /* __UBIFS_MISC_H__ */

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