Messages in this thread Patch in this message | | | Date | Tue, 18 Mar 2008 08:50:16 +0800 | From | Dave Young <> | Subject | [PATCH] ZISOFS : readpage over i_size fix |
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Read request over i_size will be dealed in do_generic_file_read. So we just return 0 to avoid getting -EIO as normal reading, let do_generic_file_read do the rest.
At the same time we need unlock the page to avoid system stuck.
For the bug report please see http://bugzilla.kernel.org/show_bug.cgi?id=10227
Signed-off-by: Dave Young <hidave.darkstar@gmail.com> Acked-by: Jan Kara <jack@suse.cz>
--- fs/isofs/compress.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff -upr linux/fs/isofs/compress.c linux.new/fs/isofs/compress.c --- linux/fs/isofs/compress.c 2008-03-17 18:07:44.000000000 +0800 +++ linux.new/fs/isofs/compress.c 2008-03-17 18:13:14.000000000 +0800 @@ -72,6 +72,16 @@ static int zisofs_readpage(struct file * offset = index & ~zisofs_block_page_mask; blockindex = offset >> zisofs_block_page_shift; maxpage = (inode->i_size + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT; + + /* Here the outsize request we just return 0 because + do_generic_file_read will handle this for us */ + + if (page->index >= maxpage) { + SetPageUptodate(page); + unlock_page(page); + return 0; + } + maxpage = min(zisofs_block_pages, maxpage-offset); for ( i = 0 ; i < maxpage ; i++, offset++ ) {
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