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author | David Woodhouse <David.Woodhouse@intel.com> | 2010-02-26 19:04:15 +0000 |
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committer | David Woodhouse <David.Woodhouse@intel.com> | 2010-02-26 19:06:24 +0000 |
commit | a7790532f5b7358c33a6b1834dc2b318de209f31 (patch) | |
tree | 0ceb9e24b3f54cb5c8453fb5a218e2a94a0f1cce /fs/ubifs | |
parent | 2764fb4244cc1bc08df3667924ca4a972e90ac70 (diff) | |
parent | 60b341b778cc2929df16c0a504c91621b3c6a4ad (diff) | |
download | linux-a7790532f5b7358c33a6b1834dc2b318de209f31.tar.gz linux-a7790532f5b7358c33a6b1834dc2b318de209f31.tar.bz2 linux-a7790532f5b7358c33a6b1834dc2b318de209f31.zip |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
The SmartMedia FTL code depends on new kfifo bits from 2.6.33
Diffstat (limited to 'fs/ubifs')
-rw-r--r-- | fs/ubifs/file.c | 2 | ||||
-rw-r--r-- | fs/ubifs/gc.c | 96 |
2 files changed, 2 insertions, 96 deletions
diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c index 39849f887e72..16a6444330ec 100644 --- a/fs/ubifs/file.c +++ b/fs/ubifs/file.c @@ -45,7 +45,7 @@ * * Similarly, @i_mutex is not always locked in 'ubifs_readpage()', e.g., the * read-ahead path does not lock it ("sys_read -> generic_file_aio_read -> - * ondemand_readahead -> readpage"). In case of readahead, @I_LOCK flag is not + * ondemand_readahead -> readpage"). In case of readahead, @I_SYNC flag is not * set as well. However, UBIFS disables readahead. */ diff --git a/fs/ubifs/gc.c b/fs/ubifs/gc.c index 618c2701d3a7..e5a3d8e96bb7 100644 --- a/fs/ubifs/gc.c +++ b/fs/ubifs/gc.c @@ -54,6 +54,7 @@ */ #include <linux/pagemap.h> +#include <linux/list_sort.h> #include "ubifs.h" /* @@ -108,101 +109,6 @@ static int switch_gc_head(struct ubifs_info *c) } /** - * list_sort - sort a list. - * @priv: private data, passed to @cmp - * @head: the list to sort - * @cmp: the elements comparison function - * - * This function has been implemented by Mark J Roberts <mjr@znex.org>. It - * implements "merge sort" which has O(nlog(n)) complexity. The list is sorted - * in ascending order. - * - * The comparison function @cmp is supposed to return a negative value if @a is - * than @b, and a positive value if @a is greater than @b. If @a and @b are - * equivalent, then it does not matter what this function returns. - */ -static void list_sort(void *priv, struct list_head *head, - int (*cmp)(void *priv, struct list_head *a, - struct list_head *b)) -{ - struct list_head *p, *q, *e, *list, *tail, *oldhead; - int insize, nmerges, psize, qsize, i; - - if (list_empty(head)) - return; - - list = head->next; - list_del(head); - insize = 1; - for (;;) { - p = oldhead = list; - list = tail = NULL; - nmerges = 0; - - while (p) { - nmerges++; - q = p; - psize = 0; - for (i = 0; i < insize; i++) { - psize++; - q = q->next == oldhead ? NULL : q->next; - if (!q) - break; - } - - qsize = insize; - while (psize > 0 || (qsize > 0 && q)) { - if (!psize) { - e = q; - q = q->next; - qsize--; - if (q == oldhead) - q = NULL; - } else if (!qsize || !q) { - e = p; - p = p->next; - psize--; - if (p == oldhead) - p = NULL; - } else if (cmp(priv, p, q) <= 0) { - e = p; - p = p->next; - psize--; - if (p == oldhead) - p = NULL; - } else { - e = q; - q = q->next; - qsize--; - if (q == oldhead) - q = NULL; - } - if (tail) - tail->next = e; - else - list = e; - e->prev = tail; - tail = e; - } - p = q; - } - - tail->next = list; - list->prev = tail; - - if (nmerges <= 1) - break; - - insize *= 2; - } - - head->next = list; - head->prev = list->prev; - list->prev->next = head; - list->prev = head; -} - -/** * data_nodes_cmp - compare 2 data nodes. * @priv: UBIFS file-system description object * @a: first data node |