blk_partition_remap

Name:Remap block n of partition p to block n+start(p) of the disk.

Proto:static inline int blk_partition_remap(struct bio *bio)

Type:int

Parameter:

Type	Parameter	Name
struct bio *	bio

843

ret = -EIO

845

_read_lock() - mark the beginning of an RCU read-side critical section* When synchronize_rcu() is invoked on one CPU while other CPUs* are within RCU read-side critical sections, then the* synchronize_rcu() is guaranteed to block until after all the other

846

p = __disk_get_part(bi_disk, bi_partno)

847

If Value for the false possibility is greater at compile time(!p) Then Go to out

849

If Value for the false possibility is greater at compile time(should_fail_request(p, residual I/O count )) Then Go to out

851

If Value for the false possibility is greater at compile time(bio_check_ro(bio, p)) Then Go to out

854

If bio_sectors(bio) Then

855

If Check whether this bio extends beyond the end of the device or partition.* This may well happen - the kernel calls bread() without checking the size of* the device, e.g., when mounting a file system. Then Go to out

857

device address in 512 byte sectors += start_sect

858

lock_bio_remap - map request for a logical device to the raw device*@q: queue holding the operation*@bio: revised operation*@dev: device for the operation*@from: original sector for the operation* An operation for a logical device has been mapped to the

861

862

ret = 0

863

out :

864

_read_unlock() - marks the end of an RCU read-side critical section.* In most situations, rcu_read_unlock() is immune from deadlock.* However, in kernels built with CONFIG_RCU_BOOST, rcu_read_unlock()

865

Return ret

**Caller**
Name	Describe
generic_make_request_checks

Source code conversion tool public plug-in interface	X
Support c/c++/esqlc/java Oracle/Informix/Mysql Plug-in can realize: logical Report Code generation and batch code conversion