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block: take lock around bdrv_read implementations
This does the first part of the conversion to coroutines, bywrapping bdrv_read implementations to take the mutex.
Drivers that implement bdrv_read rather than bdrv_co_readv canthen benefit from asynchronous operation (at least if the underlying...
block: add a CoMutex to synchronous read drivers
The big conversion of bdrv_read/write to coroutines caused the twohomonymous callbacks in BlockDriver to become reentrant. It goeslike this:
1) bdrv_read is now called in a coroutine, and calls bdrv_read or...
Use glib memory allocation and free functions
qemu_malloc/qemu_free no longer exist after this commit.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
bochs: use qemu block API
Use bdrv_pwrite to access the backing device instead of pread, andconvert the driver to implementing the bdrv_open method which givesit an already opened BlockDriverState for the underlying device.
Signed-off-by: Christoph Hellwig <hch@lst.de>...
bochs: use pread
Use pread instead of lseek + read in preparation of using the qemublock API.
Signed-off-by: Christoph Hellwig <hch@lst.de>Signed-off-by: Kevin Wolf <kwolf@redhat.com>
block: Open the underlying image file in generic code
Format drivers shouldn't need to bother with things like file names, but ratherjust get an open BlockDriverState for the underlying protocol. This patchintroduces this behaviour for bdrv_open implementation. For protocols which...
Read-only device changed to opens it's file for read-only.
Signed-off-by: Naphtali Sprei <nsprei@redhat.com>Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
block/bochs: improve format checking
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
block/bochs.c: fix warning with _FORTIFY_SOURCE
CC block/bochs.occ1: warnings being treated as errorsblock/bochs.c: In function 'seek_to_sector':block/bochs.c:202: error: ignoring return value of 'read', declared with attribute warn_unused_result...
Move block drivers into their own directory