diff options
| -rw-r--r-- | fs/file.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/file.c b/fs/file.c index 36c5089812f5..236d8bbadb0e 100644 --- a/fs/file.c +++ b/fs/file.c @@ -472,6 +472,15 @@ static unsigned int find_next_fd(struct fdtable *fdt, unsigned int start) unsigned int maxfd = fdt->max_fds; /* always multiple of BITS_PER_LONG */ unsigned int maxbit = maxfd / BITS_PER_LONG; unsigned int bitbit = start / BITS_PER_LONG; + unsigned int bit; + + /* + * Try to avoid looking at the second level bitmap + */ + bit = find_next_zero_bit(&fdt->open_fds[bitbit], BITS_PER_LONG, + start & (BITS_PER_LONG - 1)); + if (bit < BITS_PER_LONG) + return bit + bitbit * BITS_PER_LONG; bitbit = find_next_zero_bit(fdt->full_fds_bits, maxbit, bitbit) * BITS_PER_LONG; if (bitbit >= maxfd) |