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authorLinus Torvalds <torvalds@linux-foundation.org>2016-01-13 05:20:20 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2016-01-13 05:20:20 +0300
commit60b7eca1dc2ec066916b3b7ac6ad89bea13cb9af (patch)
treee95a890586b5d8113de5d1516a8b73add32876b0
parent420d12d6ade1e9c02b98fb9a381a17d7ccc7d35e (diff)
parent4fdd1d51ad5d059548c6539ac9d281f74d24bcbe (diff)
downloadlinux-60b7eca1dc2ec066916b3b7ac6ad89bea13cb9af.tar.xz
Merge tag 'upstream-4.5-rc1' of git://git.infradead.org/linux-ubifs
Pull UBI/UBIFS updates from Richard Weinberger: "This contains three changes - two cleanups and one UBI wear leveling improvement by Sebastian Siewior" * tag 'upstream-4.5-rc1' of git://git.infradead.org/linux-ubifs: ubifs: Use XATTR_*_PREFIX_LEN UBIFS: add a comment in key.h for unused parameter mtd: ubi: wl: avoid erasing a PEB which is empty
-rw-r--r--drivers/mtd/ubi/wl.c21
-rw-r--r--fs/ubifs/key.h6
-rw-r--r--fs/ubifs/xattr.c4
3 files changed, 26 insertions, 5 deletions
diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
index 56065632a5b8..17ec948ac40e 100644
--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -628,6 +628,7 @@ static int do_sync_erase(struct ubi_device *ubi, struct ubi_wl_entry *e,
return __erase_worker(ubi, &wl_wrk);
}
+static int ensure_wear_leveling(struct ubi_device *ubi, int nested);
/**
* wear_leveling_worker - wear-leveling worker function.
* @ubi: UBI device description object
@@ -649,6 +650,7 @@ static int wear_leveling_worker(struct ubi_device *ubi, struct ubi_work *wrk,
#endif
struct ubi_wl_entry *e1, *e2;
struct ubi_vid_hdr *vid_hdr;
+ int dst_leb_clean = 0;
kfree(wrk);
if (shutdown)
@@ -753,6 +755,7 @@ static int wear_leveling_worker(struct ubi_device *ubi, struct ubi_work *wrk,
err = ubi_io_read_vid_hdr(ubi, e1->pnum, vid_hdr, 0);
if (err && err != UBI_IO_BITFLIPS) {
+ dst_leb_clean = 1;
if (err == UBI_IO_FF) {
/*
* We are trying to move PEB without a VID header. UBI
@@ -798,10 +801,12 @@ static int wear_leveling_worker(struct ubi_device *ubi, struct ubi_work *wrk,
* protection queue.
*/
protect = 1;
+ dst_leb_clean = 1;
goto out_not_moved;
}
if (err == MOVE_RETRY) {
scrubbing = 1;
+ dst_leb_clean = 1;
goto out_not_moved;
}
if (err == MOVE_TARGET_BITFLIPS || err == MOVE_TARGET_WR_ERR ||
@@ -827,6 +832,7 @@ static int wear_leveling_worker(struct ubi_device *ubi, struct ubi_work *wrk,
ubi->erroneous_peb_count);
goto out_error;
}
+ dst_leb_clean = 1;
erroneous = 1;
goto out_not_moved;
}
@@ -897,15 +903,24 @@ out_not_moved:
wl_tree_add(e1, &ubi->scrub);
else
wl_tree_add(e1, &ubi->used);
+ if (dst_leb_clean) {
+ wl_tree_add(e2, &ubi->free);
+ ubi->free_count++;
+ }
+
ubi_assert(!ubi->move_to_put);
ubi->move_from = ubi->move_to = NULL;
ubi->wl_scheduled = 0;
spin_unlock(&ubi->wl_lock);
ubi_free_vid_hdr(ubi, vid_hdr);
- err = do_sync_erase(ubi, e2, vol_id, lnum, torture);
- if (err)
- goto out_ro;
+ if (dst_leb_clean) {
+ ensure_wear_leveling(ubi, 1);
+ } else {
+ err = do_sync_erase(ubi, e2, vol_id, lnum, torture);
+ if (err)
+ goto out_ro;
+ }
mutex_unlock(&ubi->move_mutex);
return 0;
diff --git a/fs/ubifs/key.h b/fs/ubifs/key.h
index 92a8491a8f8c..c0a95e393347 100644
--- a/fs/ubifs/key.h
+++ b/fs/ubifs/key.h
@@ -34,6 +34,12 @@
* node. We use "r5" hash borrowed from reiserfs.
*/
+/*
+ * Lot's of the key helpers require a struct ubifs_info *c as the first parameter.
+ * But we are not using it at all currently. That's designed for future extensions of
+ * different c->key_format. But right now, there is only one key type, UBIFS_SIMPLE_KEY_FMT.
+ */
+
#ifndef __UBIFS_KEY_H__
#define __UBIFS_KEY_H__
diff --git a/fs/ubifs/xattr.c b/fs/ubifs/xattr.c
index e8b01b721e99..e53292d0c21b 100644
--- a/fs/ubifs/xattr.c
+++ b/fs/ubifs/xattr.c
@@ -267,7 +267,7 @@ static int check_namespace(const struct qstr *nm)
if (!strncmp(nm->name, XATTR_TRUSTED_PREFIX,
XATTR_TRUSTED_PREFIX_LEN)) {
- if (nm->name[sizeof(XATTR_TRUSTED_PREFIX) - 1] == '\0')
+ if (nm->name[XATTR_TRUSTED_PREFIX_LEN] == '\0')
return -EINVAL;
type = TRUSTED_XATTR;
} else if (!strncmp(nm->name, XATTR_USER_PREFIX,
@@ -277,7 +277,7 @@ static int check_namespace(const struct qstr *nm)
type = USER_XATTR;
} else if (!strncmp(nm->name, XATTR_SECURITY_PREFIX,
XATTR_SECURITY_PREFIX_LEN)) {
- if (nm->name[sizeof(XATTR_SECURITY_PREFIX) - 1] == '\0')
+ if (nm->name[XATTR_SECURITY_PREFIX_LEN] == '\0')
return -EINVAL;
type = SECURITY_XATTR;
} else