diff options
| author | Dean Roehrich <roehrich@sgi.com> | 2005-06-22 10:20:44 +1000 |
|---|---|---|
| committer | Nathan Scott <nathans@sgi.com> | 2005-06-22 10:20:44 +1000 |
| commit | e1a40fa907498030b6e432c0dbcb06d7a9f14ee3 (patch) | |
| tree | 8f6ad8643346358ef39d7d28d1e001af81eb6e9a /fs | |
| parent | ad89d0212e32c5cf27dfcbad67b91a32b9878529 (diff) | |
| download | lwn-e1a40fa907498030b6e432c0dbcb06d7a9f14ee3.tar.gz lwn-e1a40fa907498030b6e432c0dbcb06d7a9f14ee3.zip | |
[XFS] Handle inode semaphores properly for dmapi queues
SGI-PV: 931572
SGI-Modid: xfs-linux-melb:xfs-kern:189560a
Signed-off-by: Dean Roehrich <roehrich@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_lrw.c | 10 | ||||
| -rw-r--r-- | fs/xfs/xfs_dmapi.h | 23 |
2 files changed, 20 insertions, 13 deletions
diff --git a/fs/xfs/linux-2.6/xfs_lrw.c b/fs/xfs/linux-2.6/xfs_lrw.c index 46b61a859af4..acab58c48043 100644 --- a/fs/xfs/linux-2.6/xfs_lrw.c +++ b/fs/xfs/linux-2.6/xfs_lrw.c @@ -280,10 +280,11 @@ xfs_read( if (DM_EVENT_ENABLED(vp->v_vfsp, ip, DM_EVENT_READ) && !(ioflags & IO_INVIS)) { vrwlock_t locktype = VRWLOCK_READ; + int dmflags = FILP_DELAY_FLAG(file) | DM_SEM_FLAG_RD(ioflags); ret = -XFS_SEND_DATA(mp, DM_EVENT_READ, BHV_TO_VNODE(bdp), *offset, size, - FILP_DELAY_FLAG(file), &locktype); + dmflags, &locktype); if (ret) { xfs_iunlock(ip, XFS_IOLOCK_SHARED); goto unlock_isem; @@ -843,11 +844,15 @@ retry: !(ioflags & IO_INVIS)) { xfs_rwunlock(bdp, locktype); + if (need_isem) + up(&inode->i_sem); error = XFS_SEND_NAMESP(xip->i_mount, DM_EVENT_NOSPACE, vp, DM_RIGHT_NULL, vp, DM_RIGHT_NULL, NULL, NULL, 0, 0, 0); /* Delay flag intentionally unused */ if (error) - goto out_unlock_isem; + goto out_nounlocks; + if (need_isem) + down(&inode->i_sem); xfs_rwlock(bdp, locktype); pos = xip->i_d.di_size; ret = 0; @@ -962,6 +967,7 @@ retry: out_unlock_isem: if (need_isem) up(&inode->i_sem); + out_nounlocks: return -error; } diff --git a/fs/xfs/xfs_dmapi.h b/fs/xfs/xfs_dmapi.h index 16cf9f7a4785..55c17adaaa37 100644 --- a/fs/xfs/xfs_dmapi.h +++ b/fs/xfs/xfs_dmapi.h @@ -166,27 +166,32 @@ typedef enum { #define DM_FLAGS_NDELAY 0x001 /* return EAGAIN after dm_pending() */ #define DM_FLAGS_UNWANTED 0x002 /* event not in fsys dm_eventset_t */ #define DM_FLAGS_ISEM 0x004 /* thread holds i_sem */ -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) -#if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,21) -/* i_alloc_sem was added in 2.4.22-pre1 */ #define DM_FLAGS_IALLOCSEM_RD 0x010 /* thread holds i_alloc_sem rd */ #define DM_FLAGS_IALLOCSEM_WR 0x020 /* thread holds i_alloc_sem wr */ -#endif -#endif /* * Based on IO_ISDIRECT, decide which i_ flag is set. */ -#ifdef DM_FLAGS_IALLOCSEM_RD +#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,0) +#define DM_SEM_FLAG_RD(ioflags) (((ioflags) & IO_ISDIRECT) ? \ + DM_FLAGS_ISEM : 0) +#define DM_SEM_FLAG_WR (DM_FLAGS_IALLOCSEM_WR | DM_FLAGS_ISEM) +#endif + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)) && \ + (LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,22)) #define DM_SEM_FLAG_RD(ioflags) (((ioflags) & IO_ISDIRECT) ? \ DM_FLAGS_IALLOCSEM_RD : DM_FLAGS_ISEM) #define DM_SEM_FLAG_WR (DM_FLAGS_IALLOCSEM_WR | DM_FLAGS_ISEM) -#else +#endif + +#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,4,21) #define DM_SEM_FLAG_RD(ioflags) (((ioflags) & IO_ISDIRECT) ? \ 0 : DM_FLAGS_ISEM) #define DM_SEM_FLAG_WR (DM_FLAGS_ISEM) #endif + /* * Macros to turn caller specified delay/block flags into * dm_send_xxxx_event flag DM_FLAGS_NDELAY. @@ -209,8 +214,4 @@ void xfs_dm_exit(struct file_system_type *); #define XFS_DM_EXIT(fstype) #endif -#define HAVE_XFS_DM_MM -int xfs_dm_mm_get(struct vm_area_struct *vma); -void xfs_dm_mm_put(struct vm_area_struct *vma); - #endif /* __XFS_DMAPI_H__ */ |