diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/jffs2/gc.c | 64 | ||||
| -rw-r--r-- | fs/jffs2/jffs2_fs_sb.h | 2 | ||||
| -rw-r--r-- | fs/jffs2/nodemgmt.c | 4 | ||||
| -rw-r--r-- | fs/jffs2/wbuf.c | 6 |
4 files changed, 47 insertions, 29 deletions
diff --git a/fs/jffs2/gc.c b/fs/jffs2/gc.c index 95d5880a63ee..7e553f286775 100644 --- a/fs/jffs2/gc.c +++ b/fs/jffs2/gc.c @@ -134,37 +134,59 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c) if (mutex_lock_interruptible(&c->alloc_sem)) return -EINTR; + for (;;) { + /* We can't start doing GC until we've finished checking + the node CRCs etc. */ + int bucket, want_ino; + spin_lock(&c->erase_completion_lock); if (!c->unchecked_size) break; - - /* We can't start doing GC yet. We haven't finished checking - the node CRCs etc. Do it now. */ - - /* checked_ino is protected by the alloc_sem */ - if (c->checked_ino > c->highest_ino && xattr) { - pr_crit("Checked all inodes but still 0x%x bytes of unchecked space?\n", - c->unchecked_size); - jffs2_dbg_dump_block_lists_nolock(c); - spin_unlock(&c->erase_completion_lock); - mutex_unlock(&c->alloc_sem); - return -ENOSPC; - } - spin_unlock(&c->erase_completion_lock); if (!xattr) xattr = jffs2_verify_xattr(c); spin_lock(&c->inocache_lock); + /* Instead of doing the inodes in numeric order, doing a lookup + * in the hash for each possible number, just walk the hash + * buckets of *existing* inodes. This means that we process + * them out-of-order, but it can be a lot faster if there's + * a sparse inode# space. Which there often is. */ + want_ino = c->check_ino; + for (bucket = c->check_ino % c->inocache_hashsize ; bucket < c->inocache_hashsize; bucket++) { + for (ic = c->inocache_list[bucket]; ic; ic = ic->next) { + if (ic->ino < want_ino) + continue; + + if (ic->state != INO_STATE_CHECKEDABSENT && + ic->state != INO_STATE_PRESENT) + goto got_next; /* with inocache_lock held */ + + jffs2_dbg(1, "Skipping ino #%u already checked\n", + ic->ino); + } + want_ino = 0; + } - ic = jffs2_get_ino_cache(c, c->checked_ino++); + /* Point c->check_ino past the end of the last bucket. */ + c->check_ino = ((c->highest_ino + c->inocache_hashsize + 1) & + ~c->inocache_hashsize) - 1; - if (!ic) { - spin_unlock(&c->inocache_lock); - continue; - } + spin_unlock(&c->inocache_lock); + + pr_crit("Checked all inodes but still 0x%x bytes of unchecked space?\n", + c->unchecked_size); + jffs2_dbg_dump_block_lists_nolock(c); + mutex_unlock(&c->alloc_sem); + return -ENOSPC; + + got_next: + /* For next time round the loop, we want c->checked_ino to indicate + * the *next* one we want to check. And since we're walking the + * buckets rather than doing it sequentially, it's: */ + c->check_ino = ic->ino + c->inocache_hashsize; if (!ic->pino_nlink) { jffs2_dbg(1, "Skipping check of ino #%d with nlink/pino zero\n", @@ -176,8 +198,6 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c) switch(ic->state) { case INO_STATE_CHECKEDABSENT: case INO_STATE_PRESENT: - jffs2_dbg(1, "Skipping ino #%u already checked\n", - ic->ino); spin_unlock(&c->inocache_lock); continue; @@ -196,7 +216,7 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c) ic->ino); /* We need to come back again for the _same_ inode. We've made no progress in this case, but that should be OK */ - c->checked_ino--; + c->check_ino = ic->ino; mutex_unlock(&c->alloc_sem); sleep_on_spinunlock(&c->inocache_wq, &c->inocache_lock); diff --git a/fs/jffs2/jffs2_fs_sb.h b/fs/jffs2/jffs2_fs_sb.h index 046fee8b6e9b..778275f48a87 100644 --- a/fs/jffs2/jffs2_fs_sb.h +++ b/fs/jffs2/jffs2_fs_sb.h @@ -49,7 +49,7 @@ struct jffs2_sb_info { struct mtd_info *mtd; uint32_t highest_ino; - uint32_t checked_ino; + uint32_t check_ino; /* *NEXT* inode to be checked */ unsigned int flags; diff --git a/fs/jffs2/nodemgmt.c b/fs/jffs2/nodemgmt.c index b6bd4affd9ad..cda0774c2c9c 100644 --- a/fs/jffs2/nodemgmt.c +++ b/fs/jffs2/nodemgmt.c @@ -846,8 +846,8 @@ int jffs2_thread_should_wake(struct jffs2_sb_info *c) return 1; if (c->unchecked_size) { - jffs2_dbg(1, "jffs2_thread_should_wake(): unchecked_size %d, checked_ino #%d\n", - c->unchecked_size, c->checked_ino); + jffs2_dbg(1, "jffs2_thread_should_wake(): unchecked_size %d, check_ino #%d\n", + c->unchecked_size, c->check_ino); return 1; } diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c index 5a3da3f52908..b25d28a21212 100644 --- a/fs/jffs2/wbuf.c +++ b/fs/jffs2/wbuf.c @@ -1183,22 +1183,20 @@ void jffs2_dirty_trigger(struct jffs2_sb_info *c) int jffs2_nand_flash_setup(struct jffs2_sb_info *c) { - struct nand_ecclayout *oinfo = c->mtd->ecclayout; - if (!c->mtd->oobsize) return 0; /* Cleanmarker is out-of-band, so inline size zero */ c->cleanmarker_size = 0; - if (!oinfo || oinfo->oobavail == 0) { + if (c->mtd->oobavail == 0) { pr_err("inconsistent device description\n"); return -EINVAL; } jffs2_dbg(1, "using OOB on NAND\n"); - c->oobavail = oinfo->oobavail; + c->oobavail = c->mtd->oobavail; /* Initialise write buffer */ init_rwsem(&c->wbuf_sem); |