Cc: [EMAIL PROTECTED] Cc: Linux Filesystems <linux-fsdevel@vger.kernel.org> Signed-off-by: Nick Piggin <[EMAIL PROTECTED]>
fs/nfs/file.c | 49 ++++++++++++++++++++++++++++++++++++------------- 1 file changed, 36 insertions(+), 13 deletions(-) Index: linux-2.6/fs/nfs/file.c =================================================================== --- linux-2.6.orig/fs/nfs/file.c +++ linux-2.6/fs/nfs/file.c @@ -282,27 +282,50 @@ nfs_fsync(struct file *file, struct dent } /* - * This does the "real" work of the write. The generic routine has - * allocated the page, locked it, done all the page alignment stuff - * calculations etc. Now we should just copy the data from user - * space and write it back to the real medium.. + * This does the "real" work of the write. We must allocate and lock the + * page to be sent back to the generic routine, which then copies the + * data from user space. * * If the writer ends up delaying the write, the writer needs to * increment the page use counts until he is done with the page. */ -static int nfs_prepare_write(struct file *file, struct page *page, unsigned offset, unsigned to) -{ - return nfs_flush_incompatible(file, page); +static int nfs_write_begin(struct file *file, struct address_space *mapping, + loff_t pos, unsigned len, unsigned flags, + struct page **pagep, void **fsdata) +{ + int ret; + pgoff_t index; + struct page *page; + index = pos >> PAGE_CACHE_SHIFT; + + page = __grab_cache_page(mapping, index); + if (!page) + return -ENOMEM; + *pagep = page; + + ret = nfs_flush_incompatible(file, page); + if (ret) { + unlock_page(page); + page_cache_release(page); + } + return ret; } -static int nfs_commit_write(struct file *file, struct page *page, unsigned offset, unsigned to) +static int nfs_write_end(struct file *file, struct address_space *mapping, + loff_t pos, unsigned len, unsigned copied, + struct page *page, void *fsdata) { - long status; + unsigned offset = pos & (PAGE_CACHE_SIZE - 1); + int status; lock_kernel(); - status = nfs_updatepage(file, page, offset, to-offset); + status = nfs_updatepage(file, page, offset, copied); unlock_kernel(); - return status; + + unlock_page(page); + page_cache_release(page); + + return status < 0 ? status : copied; } static void nfs_invalidate_page(struct page *page, unsigned long offset) @@ -330,8 +353,8 @@ const struct address_space_operations nf .set_page_dirty = nfs_set_page_dirty, .writepage = nfs_writepage, .writepages = nfs_writepages, - .prepare_write = nfs_prepare_write, - .commit_write = nfs_commit_write, + .write_begin = nfs_write_begin, + .write_end = nfs_write_end, .invalidatepage = nfs_invalidate_page, .releasepage = nfs_release_page, #ifdef CONFIG_NFS_DIRECTIO -- - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html