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Bug 617123 - Images are randomly corrupted with fallocate. r=jduell

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This commit is contained in:
Michal Novotny 2011-01-12 04:38:12 +02:00
parent f5ff39c7b5
commit 799b01e82d
1 changed files with 3 additions and 6 deletions
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9
netwerk/cache/nsDiskCacheStreams.cpp vendored
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@ -148,6 +148,9 @@ nsDiskCacheInputStream::Read(char * buffer, PRUint32 count, PRUint32 * bytesRead
if (mPos == mStreamEnd) return NS_OK;
if (mPos > mStreamEnd) return NS_ERROR_UNEXPECTED;
if (count > mStreamEnd - mPos)
count = mStreamEnd - mPos;
if (mFD) {
// just read from file
PRInt32 result = PR_Read(mFD, buffer, count);
@ -158,9 +161,6 @@ nsDiskCacheInputStream::Read(char * buffer, PRUint32 count, PRUint32 * bytesRead
} else if (mBuffer) {
// read data from mBuffer
if (count > mStreamEnd - mPos)
count = mStreamEnd - mPos;
memcpy(buffer, mBuffer + mPos, count);
mPos += count;
*bytesRead = count;
@ -757,12 +757,9 @@ nsDiskCacheStreamIO::FlushBufferToFile()
rv = OpenCacheFile(PR_RDWR | PR_CREATE_FILE, &mFD);
if (NS_FAILED(rv)) return rv;
#if 0
PRInt64 dataSize = mBinding->mCacheEntry->PredictedDataSize();
// Appears to cause bug 617123? Disabled for now.
if (dataSize != -1)
mozilla::fallocate(mFD, PR_MIN(dataSize, kPreallocateLimit));
#endif
}
// write buffer