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author | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2008-12-28 10:17:23 +0200 |
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committer | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2009-09-15 17:09:48 +0300 |
commit | be9e62a7307583594d88f6ccf57a4e30308e7b21 (patch) | |
tree | b30b5ccb97f583c4bbc2095923f6f5f9fd18890a /fs/ubifs/lprops.c | |
parent | 055da1b704e95fea39597bd84d64cea7d4f7d2aa (diff) | |
download | linux-be9e62a7307583594d88f6ccf57a4e30308e7b21.tar.gz linux-be9e62a7307583594d88f6ccf57a4e30308e7b21.tar.bz2 linux-be9e62a7307583594d88f6ccf57a4e30308e7b21.zip |
UBIFS: improve lprops dump
Improve 'dbg_dump_lprop()' and print dark and dead space there,
decode flags, and journal heads.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'fs/ubifs/lprops.c')
-rw-r--r-- | fs/ubifs/lprops.c | 27 |
1 files changed, 12 insertions, 15 deletions
diff --git a/fs/ubifs/lprops.c b/fs/ubifs/lprops.c index 89b355aff887..4d4ca388889b 100644 --- a/fs/ubifs/lprops.c +++ b/fs/ubifs/lprops.c @@ -461,21 +461,18 @@ static void change_category(struct ubifs_info *c, struct ubifs_lprops *lprops) } /** - * calc_dark - calculate LEB dark space size. + * ubifs_calc_dark - calculate LEB dark space size. * @c: the UBIFS file-system description object * @spc: amount of free and dirty space in the LEB * - * This function calculates amount of dark space in an LEB which has @spc bytes - * of free and dirty space. Returns the calculations result. + * This function calculates and returns amount of dark space in an LEB which + * has @spc bytes of free and dirty space. * - * Dark space is the space which is not always usable - it depends on which - * nodes are written in which order. E.g., if an LEB has only 512 free bytes, - * it is dark space, because it cannot fit a large data node. So UBIFS cannot - * count on this LEB and treat these 512 bytes as usable because it is not true - * if, for example, only big chunks of uncompressible data will be written to - * the FS. + * UBIFS is trying to account the space which might not be usable, and this + * space is called "dark space". For example, if an LEB has only %512 free + * bytes, it is dark space, because it cannot fit a large data node. */ -static int calc_dark(struct ubifs_info *c, int spc) +int ubifs_calc_dark(const struct ubifs_info *c, int spc) { ubifs_assert(!(spc & 7)); @@ -575,7 +572,7 @@ const struct ubifs_lprops *ubifs_change_lp(struct ubifs_info *c, if (old_spc < c->dead_wm) c->lst.total_dead -= old_spc; else - c->lst.total_dark -= calc_dark(c, old_spc); + c->lst.total_dark -= ubifs_calc_dark(c, old_spc); c->lst.total_used -= c->leb_size - old_spc; } @@ -616,7 +613,7 @@ const struct ubifs_lprops *ubifs_change_lp(struct ubifs_info *c, if (new_spc < c->dead_wm) c->lst.total_dead += new_spc; else - c->lst.total_dark += calc_dark(c, new_spc); + c->lst.total_dark += ubifs_calc_dark(c, new_spc); c->lst.total_used += c->leb_size - new_spc; } @@ -1107,7 +1104,7 @@ static int scan_check_cb(struct ubifs_info *c, "- continuing checking"); lst->empty_lebs += 1; lst->total_free += c->leb_size; - lst->total_dark += calc_dark(c, c->leb_size); + lst->total_dark += ubifs_calc_dark(c, c->leb_size); return LPT_SCAN_CONTINUE; } @@ -1117,7 +1114,7 @@ static int scan_check_cb(struct ubifs_info *c, "- continuing checking"); lst->total_free += lp->free; lst->total_dirty += lp->dirty; - lst->total_dark += calc_dark(c, c->leb_size); + lst->total_dark += ubifs_calc_dark(c, c->leb_size); return LPT_SCAN_CONTINUE; } data->err = PTR_ERR(sleb); @@ -1235,7 +1232,7 @@ static int scan_check_cb(struct ubifs_info *c, if (spc < c->dead_wm) lst->total_dead += spc; else - lst->total_dark += calc_dark(c, spc); + lst->total_dark += ubifs_calc_dark(c, spc); } ubifs_scan_destroy(sleb); |