search for: rw_lock

Former logic of ocfs2_file_aio_write() was a bit stricky to unlock the rw_lock and i_alloc_sem, by using some private bits in struct 'iocb' to communite with ocfs2_dio_end_io(), it did work before we introduce the patch of supporting 'coherency=full,buffered' option, since rw_lock and i_alloc_sem were never acquired both at the same time, no mattar we doing bu...

Hi, I think I found a bug in the rw_enter() implementation (emulation?) in libzpool, file /usr/src/lib/libzpool/common/kernel.c: void rw_enter(krwlock_t *rwlp, krw_t rw) { ASSERT(!RW_LOCK_HELD(rwlp)); ASSERT(rwlp->rw_owner != (void *)-1UL); ASSERT(rwlp->rw_owner != curthread); if (rw == RW_READER) (void) rw_rdlock(&rwlp->rw_lock); else (void) rw_wrlock(&rwlp->rw_lock); rwlp->rw_owner = curthread; } Doesn''t RW_LOCK_HELD() check if there'...

...g long)OCFS2_I(inode)->ip_blkno, + in->f_path.dentry->d_name.len, + in->f_path.dentry->d_name.name, + 0); + + /* + * We're fine letting folks race truncates and extending writes with + * read across the cluster, just like they can locally. Hence no + * rw_lock during read. + * + * Take and drop the meta data lock to update inode fields like i_size. + * This allows the checks down below generic_file_splice_read() a + * chance of actually working. + */ + ret = ocfs2_inode_lock_atime(inode, in->f_path.mnt, &lock_level, true); + if (ret < 0) {...

i_alloc_sem has always been a bit of an odd "lock". It''s the only remaining rw_semaphore that can be released by a different thread than the one that locked it, and it''s use case in the core direct I/O code is more like a counter given that the writers already have external serialization. This series removes it in favour of a simpler counter scheme, thus getting rid

...gt;f_path.dentry->d_name.name, + 0); + + if (in->f_flags & O_DIRECT) + return direct_splice_read(in, ppos, pipe, len, flags); + + /* + * We're fine letting folks race truncates and extending writes with + * read across the cluster, just like they can locally. Hence no + * rw_lock during read. + * + * Take and drop the meta data lock to update inode fields like i_size. + * This allows the checks down below generic_file_splice_read() a + * chance of actually working. + */ + ret = ocfs2_inode_lock_atime(inode, in->f_path.mnt, &lock_level, true); + if (ret < 0) {...

Hello, Are there any issues with Centos 4.4 and asterisk. Thanks in advance Varun