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| author |   Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2011-05-06 17:52:32 +0300 |
|---|---|---|
| committer | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2011-05-16 14:12:12 +0300 |
| commit | e11602ea3e43392904db7a579dc990062ebb7151 (patch) | |
| tree | 3930553264a369773cc1f66aa33b790d17589a40 /fs/ubifs/misc.h | |
| parent | UBIFS: expect corruption only in last journal head LEBs (diff) | |
| download | linux-dev-e11602ea3e43392904db7a579dc990062ebb7151.tar.xz linux-dev-e11602ea3e43392904db7a579dc990062ebb7151.zip | |
UBIFS: share the next_log_lnum helper
We'll need to use the 'next_log_lnum()' helper function from log.c in the fixup
code, so let's move it to misc.h. IOW, this is a preparation to the following
free space fixup changes.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'fs/ubifs/misc.h')
| -rw-r--r-- | fs/ubifs/misc.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/fs/ubifs/misc.h b/fs/ubifs/misc.h index c3de04dc952a..0b5296a9a4c5 100644 --- a/fs/ubifs/misc.h +++ b/fs/ubifs/misc.h @@ -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__ */ |