BDEV_WRITE_PAGE(9)                        The Linux VFS                        BDEV_WRITE_PAGE(9)



NAME
       bdev_write_page - Start writing a page to a block device

SYNOPSIS
       int bdev_write_page(struct block_device * bdev, sector_t sector, struct page * page,
                           struct writeback_control * wbc);

ARGUMENTS
       bdev
           The device to write the page to

       sector
           The offset on the device to write the page to (need not be aligned)

       page
           The page to write

       wbc
           The writeback_control for the write

DESCRIPTION
       On entry, the page should be locked and not currently under writeback. On exit, if the
       write started successfully, the page will be unlocked and under writeback. If the write
       failed already (eg the driver failed to queue the page to the device), the page will still
       be locked. If the caller is a ->writepage implementation, it will need to unlock the page.

       Errors returned by this function are usually “soft”, eg out of memory, or queue full;
       callers should try a different route to write this page rather than propagate an error
       back up the stack.

RETURN
       negative errno if an error occurs, 0 if submission was successful.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                        BDEV_WRITE_PAGE(9)