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authorAl Viro <viro@zeniv.linux.org.uk>2022-08-16 18:57:56 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2022-08-18 00:25:04 +0300
commit25885a35a72007cf28ec5f9ba7169c5c798f7167 (patch)
tree948589bcdf9420b67123d83eab2cf7f7d8bdbcf8 /fs/gfs2
parentd6da19c9cace63290ccfccb1fc35151ffefc0bec (diff)
downloadlinux-25885a35a72007cf28ec5f9ba7169c5c798f7167.tar.xz
Change calling conventions for filldir_t
filldir_t instances (directory iterators callbacks) used to return 0 for "OK, keep going" or -E... for "stop". Note that it's *NOT* how the error values are reported - the rules for those are callback-dependent and ->iterate{,_shared}() instances only care about zero vs. non-zero (look at emit_dir() and friends). So let's just return bool ("should we keep going?") - it's less confusing that way. The choice between "true means keep going" and "true means stop" is bikesheddable; we have two groups of callbacks - do something for everything in directory, until we run into problem and find an entry in directory and do something to it. The former tended to use 0/-E... conventions - -E<something> on failure. The latter tended to use 0/1, 1 being "stop, we are done". The callers treated anything non-zero as "stop", ignoring which non-zero value did they get. "true means stop" would be more natural for the second group; "true means keep going" - for the first one. I tried both variants and the things like if allocation failed something = -ENOMEM; return true; just looked unnatural and asking for trouble. [folded suggestion from Matthew Wilcox <willy@infradead.org>] Acked-by: Christian Brauner (Microsoft) <brauner@kernel.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/gfs2')
-rw-r--r--fs/gfs2/export.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/gfs2/export.c b/fs/gfs2/export.c
index 756d05779200..cf40895233f5 100644
--- a/fs/gfs2/export.c
+++ b/fs/gfs2/export.c
@@ -66,7 +66,7 @@ struct get_name_filldir {
char *name;
};
-static int get_name_filldir(struct dir_context *ctx, const char *name,
+static bool get_name_filldir(struct dir_context *ctx, const char *name,
int length, loff_t offset, u64 inum,
unsigned int type)
{
@@ -74,12 +74,12 @@ static int get_name_filldir(struct dir_context *ctx, const char *name,
container_of(ctx, struct get_name_filldir, ctx);
if (inum != gnfd->inum.no_addr)
- return 0;
+ return true;
memcpy(gnfd->name, name, length);
gnfd->name[length] = 0;
- return 1;
+ return false;
}
static int gfs2_get_name(struct dentry *parent, char *name,