diff options
Diffstat (limited to 'mm/filemap.c')
| -rw-r--r-- | mm/filemap.c | 26 |
1 files changed, 3 insertions, 23 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index edb1b0b5cc8..100b99c2d50 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -120,6 +120,7 @@ void __remove_from_page_cache(struct page *page) page->mapping = NULL; mapping->nrpages--; __dec_zone_page_state(page, NR_FILE_PAGES); + BUG_ON(page_mapped(page)); } void remove_from_page_cache(struct page *page) @@ -1218,6 +1219,8 @@ generic_file_aio_read(struct kiocb *iocb, const struct iovec *iov, retval = retval ?: desc.error; break; } + if (desc.count > 0) + break; } } out: @@ -1245,26 +1248,6 @@ int file_send_actor(read_descriptor_t * desc, struct page *page, unsigned long o return written; } -ssize_t generic_file_sendfile(struct file *in_file, loff_t *ppos, - size_t count, read_actor_t actor, void *target) -{ - read_descriptor_t desc; - - if (!count) - return 0; - - desc.written = 0; - desc.count = count; - desc.arg.data = target; - desc.error = 0; - - do_generic_file_read(in_file, ppos, &desc, actor); - if (desc.written) - return desc.written; - return desc.error; -} -EXPORT_SYMBOL(generic_file_sendfile); - static ssize_t do_readahead(struct address_space *mapping, struct file *filp, unsigned long index, unsigned long nr) @@ -1786,7 +1769,6 @@ retry: page = __read_cache_page(mapping, index, filler, data); if (IS_ERR(page)) return page; - mark_page_accessed(page); if (PageUptodate(page)) goto out; @@ -1985,7 +1967,6 @@ inline int generic_write_checks(struct file *file, loff_t *pos, size_t *count, i if (unlikely(*pos + *count > MAX_NON_LFS && !(file->f_flags & O_LARGEFILE))) { if (*pos >= MAX_NON_LFS) { - send_sig(SIGXFSZ, current, 0); return -EFBIG; } if (*count > MAX_NON_LFS - (unsigned long)*pos) { @@ -2003,7 +1984,6 @@ inline int generic_write_checks(struct file *file, loff_t *pos, size_t *count, i if (likely(!isblk)) { if (unlikely(*pos >= inode->i_sb->s_maxbytes)) { if (*count || *pos > inode->i_sb->s_maxbytes) { - send_sig(SIGXFSZ, current, 0); return -EFBIG; } /* zero-length writes at ->s_maxbytes are OK */ |