var = ISAFS_GLOCK(); \
if(!var) \
RX_AFS_GLOCK(); \
- } while(0);
+ } while(0)
#define COND_RE_GUNLOCK(var) \
do { \
if(var) \
RX_AFS_GUNLOCK(); \
- } while(0);
+ } while(0)
/* conditional GUNLOCK macros */
var = ISAFS_GLOCK(); \
if(var) \
RX_AFS_GUNLOCK(); \
- } while(0);
+ } while(0)
#define COND_RE_GLOCK(var) \
do { \
if(var) \
RX_AFS_GLOCK(); \
- } while(0);
+ } while(0)
-int cache_bypass_strategy = NEVER_BYPASS_CACHE;
+int cache_bypass_strategy = NEVER_BYPASS_CACHE;
int cache_bypass_threshold = AFS_CACHE_BYPASS_DISABLED; /* file size > threshold triggers bypass */
int cache_bypass_prefetch = 1; /* Should we do prefetching ? */
* existing VM pages for the file. We keep track of the number of
* times we go back and forth from caching to bypass.
*/
-void afs_TransitionToBypass(register struct vcache *avc, register afs_ucred_t *acred, int aflags)
+void
+afs_TransitionToBypass(register struct vcache *avc,
+ register afs_ucred_t *acred, int aflags)
{
afs_int32 code;
int setDesire = 0;
int setManual = 0;
- if(!avc)
+ if (!avc)
return;
- if(avc->f.states & FCSBypass)
+ if (avc->f.states & FCSBypass)
osi_Panic("afs_TransitionToBypass: illegal transition to bypass--already FCSBypass\n");
- if(aflags & TRANSChangeDesiredBit)
+ if (aflags & TRANSChangeDesiredBit)
setDesire = 1;
- if(aflags & TRANSSetManualBit)
+ if (aflags & TRANSSetManualBit)
setManual = 1;
#ifdef AFS_BOZONLOCK_ENV
afs_BozonLock(&avc->pvnLock, avc); /* Since afs_TryToSmush will do a pvn_vptrunc */
#else
- AFS_GLOCK();
+ AFS_GLOCK();
#endif
ObtainWriteLock(&avc->lock, 925);
/* If we never cached this, just change state */
- if(setDesire && (!avc->cachingStates & FCSBypass)) {
+ if (setDesire && (!avc->cachingStates & FCSBypass)) {
avc->f.states |= FCSBypass;
goto done;
}
- /* cg2v, try to store any chunks not written 20071204 */
- if (avc->execsOrWriters > 0) {
- code = afs_InitReq(&treq, acred);
- if(!code)
- code = afs_StoreAllSegments(avc, &treq, AFS_SYNC | AFS_LASTSTORE);
- }
+
+ /* cg2v, try to store any chunks not written 20071204 */
+ if (avc->execsOrWriters > 0) {
+ code = afs_InitReq(&treq, acred);
+ if (!code)
+ code = afs_StoreAllSegments(avc, &treq, AFS_SYNC | AFS_LASTSTORE);
+ }
+
#if 0
- /* also cg2v, don't dequeue the callback */
+ /* also cg2v, don't dequeue the callback */
ObtainWriteLock(&afs_xcbhash, 956);
afs_DequeueCallback(avc);
- ReleaseWriteLock(&afs_xcbhash);
-#endif
- avc->f.states &= ~(CStatd | CDirty); /* next reference will re-stat cache entry */
+ ReleaseWriteLock(&afs_xcbhash);
+#endif
+ avc->f.states &= ~(CStatd | CDirty); /* next reference will re-stat */
/* now find the disk cache entries */
afs_TryToSmush(avc, acred, 1);
osi_dnlc_purgedp(avc);
afs_osi_Free(avc->linkData, strlen(avc->linkData) + 1);
avc->linkData = NULL;
}
-
+
avc->cachingStates |= FCSBypass; /* Set the bypass flag */
if(setDesire)
avc->cachingStates |= FCSDesireBypass;
avc->cachingStates |= FCSManuallySet;
avc->cachingTransitions++;
-done:
+done:
ReleaseWriteLock(&avc->lock);
#ifdef AFS_BOZONLOCK_ENV
afs_BozonUnlock(&avc->pvnLock, avc);
#else
- AFS_GUNLOCK();
+ AFS_GUNLOCK();
#endif
}
* throw out any existing VM pages for the file. We keep track of
* the number of times we go back and forth from caching to bypass.
*/
-void afs_TransitionToCaching(register struct vcache *avc, register afs_ucred_t *acred, int aflags)
+void
+afs_TransitionToCaching(register struct vcache *avc,
+ register afs_ucred_t *acred,
+ int aflags)
{
int resetDesire = 0;
int setManual = 0;
- if(!avc)
+ if (!avc)
return;
-
- if(!avc->f.states & FCSBypass)
+
+ if (!avc->f.states & FCSBypass)
osi_Panic("afs_TransitionToCaching: illegal transition to caching--already caching\n");
- if(aflags & TRANSChangeDesiredBit)
+ if (aflags & TRANSChangeDesiredBit)
resetDesire = 1;
- if(aflags & TRANSSetManualBit)
+ if (aflags & TRANSSetManualBit)
setManual = 1;
#ifdef AFS_BOZONLOCK_ENV
afs_BozonLock(&avc->pvnLock, avc); /* Since afs_TryToSmush will do a pvn_vptrunc */
#else
- AFS_GLOCK();
+ AFS_GLOCK();
#endif
ObtainWriteLock(&avc->lock, 926);
-
+
/* Ok, we actually do need to flush */
ObtainWriteLock(&afs_xcbhash, 957);
afs_DequeueCallback(avc);
#ifdef AFS_BOZONLOCK_ENV
afs_BozonUnlock(&avc->pvnLock, avc);
#else
- AFS_GUNLOCK();
+ AFS_GUNLOCK();
#endif
}
pp = (struct page*) ciov->iov_base; \
} \
afs_warn("Pages Unlocked.\n"); \
- } while(0);
+ } while(0)
#else
#ifdef UKERNEL
#define unlock_pages(auio) \
- do { } while(0);
+ do { } while(0)
#else
#error AFS_CACHE_BYPASS not implemented on this platform
#endif
if(tlen > 0) {
iovoff += code;
address += code;
-
} else {
#ifdef AFS_LINUX24_ENV
#ifdef AFS_KMAP_ATOMIC
#error AFS_CACHE_BYPASS not implemented on this platform
#endif
#endif /* LINUX 24 */
- /* we filled a page, conditionally release it */
- if(release_pages && ciov->iov_base) {
- /* this is appropriate when no caller intends to unlock
- * and release the page */
+ /* we filled a page, conditionally release it */
+ if (release_pages && ciov->iov_base) {
+ /* this is appropriate when no caller intends to unlock
+ * and release the page */
#ifdef AFS_LINUX24_ENV
- SetPageUptodate(pp);
- if(PageLocked(pp))
- UnlockPage(pp);
- else
- afs_warn("afs_NoCacheFetchProc: page not locked at iovno %d!\n", iovno);
-
+ SetPageUptodate(pp);
+ if(PageLocked(pp))
+ UnlockPage(pp);
+ else
+ afs_warn("afs_NoCacheFetchProc: page not locked at iovno %d!\n", iovno);
#ifndef AFS_KMAP_ATOMIC
- kunmap(pp);
+ kunmap(pp);
#endif
#else
#ifndef UKERNEL
#error AFS_CACHE_BYPASS not implemented on this platform
#endif
#endif /* LINUX24 */
- }
- /* and carry uio_iov */
- iovno++;
- if(iovno > iovmax) goto done;
+ }
+ /* and carry uio_iov */
+ iovno++;
+ if (iovno > iovmax)
+ goto done;
- ciov = (auio->uio_iov + iovno);
- pp = (struct page*) ciov->iov_base;
- iovoff = 0;
+ ciov = (auio->uio_iov + iovno);
+ pp = (struct page*) ciov->iov_base;
+ iovoff = 0;
}
}
} while (moredata);
/* dispatch a no-cache read request */
afs_int32
afs_ReadNoCache(register struct vcache *avc,
- register struct nocache_read_request *bparms,
- afs_ucred_t *acred)
+ register struct nocache_read_request *bparms,
+ afs_ucred_t *acred)
{
afs_int32 code;
afs_int32 bcnt;
areq = osi_Alloc(sizeof(struct vrequest));
if (avc && avc->vc_error) {
- code = EIO;
- afs_warn("afs_ReadNoCache VCache Error!\n");
- goto cleanup;
+ code = EIO;
+ afs_warn("afs_ReadNoCache VCache Error!\n");
+ goto cleanup;
}
if ((code = afs_InitReq(areq, acred))) {
- afs_warn("afs_ReadNoCache afs_InitReq error!\n");
- goto cleanup;
+ afs_warn("afs_ReadNoCache afs_InitReq error!\n");
+ goto cleanup;
}
AFS_GLOCK();
AFS_GUNLOCK();
if (code) {
- code = afs_CheckCode(code, areq, 11); /* failed to get it */
- afs_warn("afs_ReadNoCache Failed to verify VCache!\n");
- goto cleanup;
+ code = afs_CheckCode(code, areq, 11); /* failed to get it */
+ afs_warn("afs_ReadNoCache Failed to verify VCache!\n");
+ goto cleanup;
}
bparms->areq = areq;
bcnt = 1;
AFS_GLOCK();
while(bcnt < 20) {
- breq = afs_BQueue(BOP_FETCH_NOCACHE, avc, B_DONTWAIT, 0, acred, 1, 1, bparms);
- if(breq != 0) {
- code = 0;
- break;
- }
- afs_osi_Wait(10 * bcnt, 0, 0);
+ breq = afs_BQueue(BOP_FETCH_NOCACHE, avc, B_DONTWAIT, 0, acred, 1, 1,
+ bparms);
+ if(breq != 0) {
+ code = 0;
+ break;
+ }
+ afs_osi_Wait(10 * bcnt, 0, 0);
}
AFS_GUNLOCK();
if(!breq) {
code = EBUSY;
- goto cleanup;
+ goto cleanup;
}
return code;
#endif
#endif
osi_Free(areq, sizeof(struct vrequest));
- osi_Free(bparms->auio->uio_iov, bparms->auio->uio_iovcnt * sizeof(struct iovec));
+ osi_Free(bparms->auio->uio_iov,
+ bparms->auio->uio_iovcnt * sizeof(struct iovec));
osi_Free(bparms->auio, sizeof(uio_t));
osi_Free(bparms, sizeof(struct nocache_read_request));
return code;
-
}
/* Cannot have static linkage--called from BPrefetch (afs_daemons) */
afs_int32
afs_PrefetchNoCache(register struct vcache *avc,
- register afs_ucred_t *acred,
- register struct nocache_read_request *bparms)
+ register afs_ucred_t *acred,
+ register struct nocache_read_request *bparms)
{
uio_t *auio;
struct iovec *iovecp;
afs_int32 i;
struct rx_call *tcall;
struct tlocal1 {
- struct AFSVolSync tsync;
- struct AFSFetchStatus OutStatus;
- struct AFSCallBack CallBack;
+ struct AFSVolSync tsync;
+ struct AFSFetchStatus OutStatus;
+ struct AFSCallBack CallBack;
};
struct tlocal1 *tcallspec;
tcallspec = (struct tlocal1 *) osi_Alloc(sizeof(struct tlocal1));
do {
- tc = afs_Conn(&avc->f.fid, areq, SHARED_LOCK /* ignored */);
- if (tc) {
- avc->callback = tc->srvr->server;
- i = osi_Time();
- tcall = rx_NewCall(tc->id);
+ tc = afs_Conn(&avc->f.fid, areq, SHARED_LOCK /* ignored */);
+ if (tc) {
+ avc->callback = tc->srvr->server;
+ i = osi_Time();
+ tcall = rx_NewCall(tc->id);
#ifdef AFS_64BIT_CLIENT
- if(!afs_serverHasNo64Bit(tc)) {
- code = StartRXAFS_FetchData64(tcall,
- (struct AFSFid *) &avc->f.fid.Fid,
- auio->uio_offset,
- bparms->length);
- if (code == 0) {
-
- COND_GUNLOCK(locked);
- bytes = rx_Read(tcall, (char *)&length_hi, sizeof(afs_int32));
- COND_RE_GLOCK(locked);
+ if (!afs_serverHasNo64Bit(tc)) {
+ code = StartRXAFS_FetchData64(tcall,
+ (struct AFSFid *) &avc->f.fid.Fid,
+ auio->uio_offset,
+ bparms->length);
+ if (code == 0) {
+ COND_GUNLOCK(locked);
+ bytes = rx_Read(tcall, (char *)&length_hi,
+ sizeof(afs_int32));
+ COND_RE_GLOCK(locked);
- if (bytes != sizeof(afs_int32)) {
- length_hi = 0;
- code = rx_Error(tcall);
- COND_GUNLOCK(locked);
- code = rx_EndCall(tcall, code);
- COND_RE_GLOCK(locked);
- tcall = (struct rx_call *)0;
- }
- }
- if (code == RXGEN_OPCODE || afs_serverHasNo64Bit(tc)) {
- if (auio->uio_offset > 0x7FFFFFFF) {
- code = EFBIG;
- } else {
- afs_int32 pos;
- pos = auio->uio_offset;
- COND_GUNLOCK(locked);
- if (!tcall)
- tcall = rx_NewCall(tc->id);
- code = StartRXAFS_FetchData(tcall,
- (struct AFSFid *) &avc->f.fid.Fid,
- pos, bparms->length);
- COND_RE_GLOCK(locked);
- }
- afs_serverSetNo64Bit(tc);
- }
- } /* afs_serverHasNo64Bit */
-#else
- code = StartRXAFS_FetchData(tcall,
- (struct AFSFid *) &avc->f.fid.Fid,
- auio->uio_offset, bparms->length);
-#endif
-
- if (code == 0) {
- code = afs_NoCacheFetchProc(tcall, avc, auio,
- 1 /* release_pages */);
- } else {
- afs_warn("BYPASS: StartRXAFS_FetchData failed: %d\n", code);
- unlock_pages(auio);
- goto done;
- }
- if (code == 0) {
- code = EndRXAFS_FetchData(tcall,
- &tcallspec->OutStatus,
- &tcallspec->CallBack,
- &tcallspec->tsync);
- } else {
- afs_warn("BYPASS: NoCacheFetchProc failed: %d\n", code);
- }
+ if (bytes != sizeof(afs_int32)) {
+ length_hi = 0;
+ code = rx_Error(tcall);
+ COND_GUNLOCK(locked);
code = rx_EndCall(tcall, code);
+ COND_RE_GLOCK(locked);
+ tcall = NULL;
+ }
}
- else {
- afs_warn("BYPASS: No connection.\n");
- code = -1;
+ if (code == RXGEN_OPCODE || afs_serverHasNo64Bit(tc)) {
+ if (auio->uio_offset > 0x7FFFFFFF) {
+ code = EFBIG;
+ } else {
+ afs_int32 pos;
+ pos = auio->uio_offset;
+ COND_GUNLOCK(locked);
+ if (!tcall)
+ tcall = rx_NewCall(tc->id);
+ code = StartRXAFS_FetchData(tcall,
+ (struct AFSFid *) &avc->f.fid.Fid,
+ pos, bparms->length);
+ COND_RE_GLOCK(locked);
+ }
+ afs_serverSetNo64Bit(tc);
+ }
+ } /* afs_serverHasNo64Bit */
+#else
+ code = StartRXAFS_FetchData(tcall,
+ (struct AFSFid *) &avc->f.fid.Fid,
+ auio->uio_offset, bparms->length);
+#endif
+ if (code == 0) {
+ code = afs_NoCacheFetchProc(tcall, avc, auio,
+ 1 /* release_pages */);
+ } else {
+ afs_warn("BYPASS: StartRXAFS_FetchData failed: %d\n", code);
+ unlock_pages(auio);
+ goto done;
+ }
+ if (code == 0) {
+ code = EndRXAFS_FetchData(tcall, &tcallspec->OutStatus,
+ &tcallspec->CallBack,
+ &tcallspec->tsync);
+ } else {
+ afs_warn("BYPASS: NoCacheFetchProc failed: %d\n", code);
+ }
+ code = rx_EndCall(tcall, code);
+ } else {
+ afs_warn("BYPASS: No connection.\n");
+ code = -1;
#ifdef AFS_LINUX24_ENV
- unlock_pages(auio);
+ unlock_pages(auio);
#else
#ifndef UKERNEL
#error AFS_CACHE_BYPASS not implemented on this platform
#endif
#endif
- goto done;
- }
+ goto done;
+ }
} while (afs_Analyze(tc, code, &avc->f.fid, areq,
AFS_STATS_FS_RPCIDX_FETCHDATA,
SHARED_LOCK,0));
git://git.openafs.org / openafs.git / commitdiff