diff options
Diffstat (limited to 'src/os_unix.c')
| -rw-r--r-- | src/os_unix.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/src/os_unix.c b/src/os_unix.c index 88f317702..2f03c3967 100644 --- a/src/os_unix.c +++ b/src/os_unix.c @@ -3470,6 +3470,14 @@ static int unixTruncate(sqlite3_file *id, i64 nByte){ if( pFile->inNormalWrite && nByte==0 ){ pFile->transCntrChng = 1; } + + /* If the file was just truncated to a size smaller than the currently + ** mapped region, reduce the effective mapping size as well. SQLite will + ** use read() and write() to access data beyond this point from now on. + */ + if( nByte<pFile->mmapSize ){ + pFile->mmapSize = nByte; + } #endif return SQLITE_OK; @@ -4461,7 +4469,7 @@ static int unixMremap( i64 nOldRnd; /* nOld rounded up */ assert( iOff==0 ); - assert( p->mmapSize==nOld ); + /* assert( p->mmapSize==nOld ); */ assert( p->pMapRegion==0 || p->pMapRegion==(*ppMap) ); /* If the SQLITE_MREMAP_EXTEND flag is set, then the size of the requested |