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| author | Guillem Jover <guillem@debian.org> | 2016-11-16 03:00:07 +0100 |
|---|---|---|
| committer | Guillem Jover <guillem@debian.org> | 2016-11-16 05:02:10 +0100 |
| commit | a971ad91437af8880cad4703695dcf12ee45959b (patch) | |
| tree | 884ef66a13042a0432fb1333a542efe3959447dd /lib | |
| parent | 4c217aee7a610dad02d5b28a2f9bf5d934fea77c (diff) | |
| download | dpkg-a971ad91437af8880cad4703695dcf12ee45959b.tar.gz | |
libdpkg: Only preallocate disk size for files bigger than 16 KiB
Preallocating for very small fails causes some filesystems to degrade
performance. Do so only for "big enough" files.
Closes: #824636
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/dpkg/fdio.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/dpkg/fdio.c b/lib/dpkg/fdio.c index 38781c887..b98596e2b 100644 --- a/lib/dpkg/fdio.c +++ b/lib/dpkg/fdio.c @@ -102,7 +102,9 @@ fd_allocate_size(int fd, off_t offset, off_t len) { int rc; - if (len == 0) + /* Do not preallocate on very small files as that degrades performance + * on some filesystems. */ + if (len < (4 * 4096) - 1) return 0; #if defined(HAVE_F_PREALLOCATE) |