From 0c9bd6365d0b278728359843b8303047ddedb831 Mon Sep 17 00:00:00 2001 From: Richard Weinberger Date: Tue, 24 Mar 2015 15:47:38 +0100 Subject: um: hostfs: Reduce number of syscalls in readdir Currently hostfs issues every time a seekdir(), in fact it has to do this only upon the first call. Also telldir() can be omitted as we can obtain the directory offset from readdir(). Signed-off-by: Richard Weinberger --- fs/hostfs/hostfs_user.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) (limited to 'fs/hostfs/hostfs_user.c') diff --git a/fs/hostfs/hostfs_user.c b/fs/hostfs/hostfs_user.c index 34ab81b21c93..9c1e0f019880 100644 --- a/fs/hostfs/hostfs_user.c +++ b/fs/hostfs/hostfs_user.c @@ -97,21 +97,27 @@ void *open_dir(char *path, int *err_out) return dir; } -char *read_dir(void *stream, unsigned long long *pos, +void seek_dir(void *stream, unsigned long long pos) +{ + DIR *dir = stream; + + seekdir(dir, pos); +} + +char *read_dir(void *stream, unsigned long long *pos_out, unsigned long long *ino_out, int *len_out, unsigned int *type_out) { DIR *dir = stream; struct dirent *ent; - seekdir(dir, *pos); ent = readdir(dir); if (ent == NULL) return NULL; *len_out = strlen(ent->d_name); *ino_out = ent->d_ino; *type_out = ent->d_type; - *pos = telldir(dir); + *pos_out = ent->d_off; return ent->d_name; } -- cgit v1.2.3