| Message ID | 1509459011-7398-1-git-send-email-nborisov@suse.com (mailing list archive) |
|---|---|
| State | Superseded, archived |
| Headers | show |
> Subject: Re: [PATCH v2 1/2] fiemap: Factor out actual fiemap call code I thought this was v3.... On Tue, Oct 31, 2017 at 04:10:10PM +0200, Nikolay Borisov wrote: > This will be needed to in a subsequent patch to avoid code duplication > > Signed-off-by: Nikolay Borisov <nborisov@suse.com> > --- > v2: > * Incorporated Daricks feedback - removed variables which weren't introduced > until the next patch as a result the build with this patch was broken. This is > fixed now > io/fiemap.c | 39 ++++++++++++++++++++++++++++----------- > 1 file changed, 28 insertions(+), 11 deletions(-) > > diff --git a/io/fiemap.c b/io/fiemap.c > index e6fd66da753d..08391f69d9bd 100644 > --- a/io/fiemap.c > +++ b/io/fiemap.c > @@ -211,6 +211,31 @@ calc_print_format( > } > } > > +static int > +__fiemap( > + struct fiemap * fiemap, struct fiemap *fiemap, > + int mapsize, > + __u32 flags, > + __u64 start, > + __u64 length) { > + > + int ret; int ret; (Yeah, I know...) > + > + memset(fiemap, 0, mapsize); > + fiemap->fm_flags = flags; > + fiemap->fm_start = start; > + fiemap->fm_length = length; > + fiemap->fm_extent_count = EXTENT_BATCH; It's odd that we pass in both the struct* and its initializers here, but we still have to have a way to pass fm_flags and fm_mapped_extents back to the __fiemap() caller. (TBH I'm wondering if this patch is necessary...) --D > + ret = ioctl(file->fd, FS_IOC_FIEMAP, fiemap); > + if (ret < 0) { > + fprintf(stderr, "%s: ioctl(FS_IOC_FIEMAP) [\"%s\"]: " > + "%s\n", progname, file->name, strerror(errno)); > + return ret; > + } > + > + return 0; > +} > + > int > fiemap_f( > int argc, > @@ -266,19 +291,11 @@ fiemap_f( > > while (!last && (cur_extent != max_extents)) { > > - memset(fiemap, 0, map_size); > - fiemap->fm_flags = fiemap_flags; > - fiemap->fm_start = last_logical; > - fiemap->fm_length = -1LL; > - fiemap->fm_extent_count = EXTENT_BATCH; > - > - ret = ioctl(file->fd, FS_IOC_FIEMAP, (unsigned long)fiemap); > + ret = __fiemap(fiemap, map_size, fiemap_flags, last_logical, > + -1LL); > if (ret < 0) { > - fprintf(stderr, "%s: ioctl(FS_IOC_FIEMAP) [\"%s\"]: " > - "%s\n", progname, file->name, strerror(errno)); > - free(fiemap); > exitcode = 1; > - return 0; > + goto out; > } > > /* No more extents to map, exit */ > -- > 2.7.4 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-xfs" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-xfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On 31.10.2017 22:29, Darrick J. Wong wrote: >> Subject: Re: [PATCH v2 1/2] fiemap: Factor out actual fiemap call code > > I thought this was v3.... > > On Tue, Oct 31, 2017 at 04:10:10PM +0200, Nikolay Borisov wrote: >> This will be needed to in a subsequent patch to avoid code duplication >> >> Signed-off-by: Nikolay Borisov <nborisov@suse.com> >> --- >> v2: >> * Incorporated Daricks feedback - removed variables which weren't introduced >> until the next patch as a result the build with this patch was broken. This is >> fixed now >> io/fiemap.c | 39 ++++++++++++++++++++++++++++----------- >> 1 file changed, 28 insertions(+), 11 deletions(-) >> >> diff --git a/io/fiemap.c b/io/fiemap.c >> index e6fd66da753d..08391f69d9bd 100644 >> --- a/io/fiemap.c >> +++ b/io/fiemap.c >> @@ -211,6 +211,31 @@ calc_print_format( >> } >> } >> >> +static int >> +__fiemap( >> + struct fiemap * fiemap, > > struct fiemap *fiemap, > >> + int mapsize, >> + __u32 flags, >> + __u64 start, >> + __u64 length) { >> + >> + int ret; > > int ret; > > (Yeah, I know...) > >> + >> + memset(fiemap, 0, mapsize); >> + fiemap->fm_flags = flags; >> + fiemap->fm_start = start; >> + fiemap->fm_length = length; >> + fiemap->fm_extent_count = EXTENT_BATCH; > > It's odd that we pass in both the struct* and its initializers here, but > we still have to have a way to pass fm_flags and fm_mapped_extents back > to the __fiemap() caller. > > (TBH I'm wondering if this patch is necessary...) Well, I'd rather have this function and make the final hole handling in the next one being a bit more clear, than duplicating the setup + ioctl statements :) > > --D > >> + ret = ioctl(file->fd, FS_IOC_FIEMAP, fiemap); >> + if (ret < 0) { >> + fprintf(stderr, "%s: ioctl(FS_IOC_FIEMAP) [\"%s\"]: " >> + "%s\n", progname, file->name, strerror(errno)); >> + return ret; >> + } >> + >> + return 0; >> +} >> + >> int >> fiemap_f( >> int argc, >> @@ -266,19 +291,11 @@ fiemap_f( >> >> while (!last && (cur_extent != max_extents)) { >> >> - memset(fiemap, 0, map_size); >> - fiemap->fm_flags = fiemap_flags; >> - fiemap->fm_start = last_logical; >> - fiemap->fm_length = -1LL; >> - fiemap->fm_extent_count = EXTENT_BATCH; >> - >> - ret = ioctl(file->fd, FS_IOC_FIEMAP, (unsigned long)fiemap); >> + ret = __fiemap(fiemap, map_size, fiemap_flags, last_logical, >> + -1LL); >> if (ret < 0) { >> - fprintf(stderr, "%s: ioctl(FS_IOC_FIEMAP) [\"%s\"]: " >> - "%s\n", progname, file->name, strerror(errno)); >> - free(fiemap); >> exitcode = 1; >> - return 0; >> + goto out; >> } >> >> /* No more extents to map, exit */ >> -- >> 2.7.4 >> >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-xfs" in >> the body of a message to majordomo@vger.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-xfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/io/fiemap.c b/io/fiemap.c index e6fd66da753d..08391f69d9bd 100644 --- a/io/fiemap.c +++ b/io/fiemap.c @@ -211,6 +211,31 @@ calc_print_format( } } +static int +__fiemap( + struct fiemap * fiemap, + int mapsize, + __u32 flags, + __u64 start, + __u64 length) { + + int ret; + + memset(fiemap, 0, mapsize); + fiemap->fm_flags = flags; + fiemap->fm_start = start; + fiemap->fm_length = length; + fiemap->fm_extent_count = EXTENT_BATCH; + ret = ioctl(file->fd, FS_IOC_FIEMAP, fiemap); + if (ret < 0) { + fprintf(stderr, "%s: ioctl(FS_IOC_FIEMAP) [\"%s\"]: " + "%s\n", progname, file->name, strerror(errno)); + return ret; + } + + return 0; +} + int fiemap_f( int argc, @@ -266,19 +291,11 @@ fiemap_f( while (!last && (cur_extent != max_extents)) { - memset(fiemap, 0, map_size); - fiemap->fm_flags = fiemap_flags; - fiemap->fm_start = last_logical; - fiemap->fm_length = -1LL; - fiemap->fm_extent_count = EXTENT_BATCH; - - ret = ioctl(file->fd, FS_IOC_FIEMAP, (unsigned long)fiemap); + ret = __fiemap(fiemap, map_size, fiemap_flags, last_logical, + -1LL); if (ret < 0) { - fprintf(stderr, "%s: ioctl(FS_IOC_FIEMAP) [\"%s\"]: " - "%s\n", progname, file->name, strerror(errno)); - free(fiemap); exitcode = 1; - return 0; + goto out; } /* No more extents to map, exit */
This will be needed to in a subsequent patch to avoid code duplication Signed-off-by: Nikolay Borisov <nborisov@suse.com> --- v2: * Incorporated Daricks feedback - removed variables which weren't introduced until the next patch as a result the build with this patch was broken. This is fixed now io/fiemap.c | 39 ++++++++++++++++++++++++++++----------- 1 file changed, 28 insertions(+), 11 deletions(-)