#include <afsconfig.h>
#include "afs/param.h"
-RCSID
- ("$Header$");
#include "afs/sysincludes.h" /* Standard vendor system headers */
#include "afsincludes.h" /* Afs-based standard headers */
if (avc->opens != 0)
return EBUSY;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
- truncate_inode_pages(&ip->i_data, 0);
-#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,15)
- truncate_inode_pages(ip, 0);
-#else
- invalidate_inode_pages(ip);
-#endif
+ return vmtruncate(ip, 0);
return 0;
}
* be some pages around when we return, newly created by concurrent activity.
*/
void
-osi_VM_TryToSmush(struct vcache *avc, struct AFS_UCRED *acred, int sync)
+osi_VM_TryToSmush(struct vcache *avc, AFS_UCRED *acred, int sync)
{
struct inode *ip = AFSTOV(avc);
-#if defined(AFS_LINUX26_ENV)
invalidate_inode_pages(ip->i_mapping);
-#else
- invalidate_inode_pages(ip);
-#endif
}
/* Flush and invalidate pages, for fsync() with INVAL flag
{
struct inode *ip = AFSTOV(avc);
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,5)
+ if (avc->f.states & CPageWrite)
+ return; /* someone already writing */
+
/* filemap_fdatasync() only exported in 2.4.5 and above */
ReleaseWriteLock(&avc->lock);
AFS_GUNLOCK();
-#if defined(AFS_LINUX26_ENV)
filemap_fdatawrite(ip->i_mapping);
-#else
- filemap_fdatasync(ip->i_mapping);
-#endif
filemap_fdatawait(ip->i_mapping);
AFS_GLOCK();
ObtainWriteLock(&avc->lock, 121);
-#endif
}
/* Purge VM for a file when its callback is revoked.
*
* Locking: No lock is held, not even the global lock.
*/
+
+/* Note that for speed some of our Linux vnodeops do not initialise credp
+ * before calling osi_FlushPages(). If credp is ever required on Linux,
+ * then these callers should be updated.
+ */
void
-osi_VM_FlushPages(struct vcache *avc, struct AFS_UCRED *credp)
+osi_VM_FlushPages(struct vcache *avc, AFS_UCRED *credp)
{
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
struct inode *ip = AFSTOV(avc);
-
+
truncate_inode_pages(&ip->i_data, 0);
-#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,15)
- struct inode *ip = AFSTOV(avc);
-
- truncate_inode_pages(ip, 0);
-#else
- invalidate_inode_pages(AFSTOV(avc));
-#endif
}
/* Purge pages beyond end-of-file, when truncating a file.
* it only works on Solaris.
*/
void
-osi_VM_Truncate(struct vcache *avc, int alen, struct AFS_UCRED *acred)
+osi_VM_Truncate(struct vcache *avc, int alen, AFS_UCRED *acred)
{
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
- struct inode *ip = AFSTOV(avc);
-
- truncate_inode_pages(&ip->i_data, alen);
-#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,15)
- struct inode *ip = AFSTOV(avc);
-
- truncate_inode_pages(ip, alen);
-#else
- invalidate_inode_pages(AFSTOV(avc));
-#endif
+ vmtruncate(AFSTOV(avc), alen);
}