AuxXxilium/linux_dsm_epyc7002
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Merge branch 'for-linus' of git://git.open-osd.org/linux-open-osd

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* 'for-linus' of git://git.open-osd.org/linux-open-osd:
  exofs: Fix double page_unlock BUG in write_begin/end
This commit is contained in:
Linus Torvalds 2010-10-09 12:03:23 -07:00
commit 267aeb6c14
1 changed files with 7 additions and 1 deletions
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8
fs/exofs/inode.c
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@ -54,6 +54,9 @@ struct page_collect {
unsigned nr_pages;
unsigned long length;
loff_t pg_first; /* keep 64bit also in 32-arches */
bool read_4_write; /* This means two things: that the read is sync
* And the pages should not be unlocked.
*/
};
static void _pcol_init(struct page_collect *pcol, unsigned expected_pages,
@ -71,6 +74,7 @@ static void _pcol_init(struct page_collect *pcol, unsigned expected_pages,
pcol->nr_pages = 0;
pcol->length = 0;
pcol->pg_first = -1;
pcol->read_4_write = false;
}
static void _pcol_reset(struct page_collect *pcol)
@ -347,7 +351,8 @@ static int readpage_strip(void *data, struct page *page)
if (PageError(page))
ClearPageError(page);
unlock_page(page);
if (!pcol->read_4_write)
unlock_page(page);
EXOFS_DBGMSG("readpage_strip(0x%lx, 0x%lx) empty page,"
" splitting\n", inode->i_ino, page->index);
@ -428,6 +433,7 @@ static int _readpage(struct page *page, bool is_sync)
/* readpage_strip might call read_exec(,is_sync==false) at several
* places but not if we have a single page.
*/
pcol.read_4_write = is_sync;
ret = readpage_strip(&pcol, page);
if (ret) {
EXOFS_ERR("_readpage => %d\n", ret);