rwsem_is_locked

Name:In all implementations count != 0 means locked

Proto:static inline int rwsem_is_locked(struct rw_semaphore *sem)

Type:int

Parameter:

Type	Parameter	Name
struct rw_semaphore *	sem

65

Return atomic_long_read( & count) != 0

**Caller**
Name	Describe
populate_vma_page_range	populate_vma_page_range() - populate a range of pages in the vma
zap_pud_range
anon_vma_free
wait_sb_inodes	The @s_sync_lock is used to serialise concurrent sync operations* to avoid lock contention problems with concurrent wait_sb_inodes() calls.* Concurrent callers will block on the s_sync_lock rather than doing contending* walks
__writeback_inodes_sb_nr
sync_inodes_sb	sync_inodes_sb - sync sb inode pages@sb: the superblock This function writes and waits on any dirty inode belonging to this* super_block.
sync_filesystem	Write out and wait upon all dirty data associated with this* superblock. Filesystem data as well as the underlying block* device. Takes the superblock lock.
userfaultfd_huge_must_wait	Same functionality as userfaultfd_must_wait below with modifications for* hugepmd ranges.
userfaultfd_must_wait	Verify the pagetables are still not ok after having reigstered into* the fault_pending_wqh to avoid userland having to UFFDIO_WAKE any* userfault that has already been resolved, if userfaultfd_read and* UFFDIO_COPY\|ZEROPAGE are being run simultaneously on
handle_userfault	The locking rules involved in returning VM_FAULT_RETRY depending on* FAULT_FLAG_ALLOW_RETRY, FAULT_FLAG_RETRY_NOWAIT and* FAULT_FLAG_KILLABLE are not straightforward
dquot_scan_active	Call callback for every active dquot on given filesystem
dquot_writeback_dquots	Write all dquot structures to quota files

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