bdev_write_page (9) - Linux Manuals
bdev_write_page: Start writing a page to a block device
NAME
bdev_write_page - Start writing a page to a block device
SYNOPSIS
-
int bdev_write_page(struct block_device
* bdev, sector_tsector, 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