c/mirror_zfs
1
0
Fork 0
mirror of https://git.proxmox.com/git/mirror_zfs.git synced 2026-05-22 18:40:43 +03:00
Code Issues Packages Projects Releases Wiki Activity

Simplify BDI integration

Browse Source 
Update the code to use the bdi_setup_and_register() helper to
simplify the bdi integration code.  The updated code now just
registers the bdi during mount and destroys it during unmount.

The only complication is that for 2.6.32 - 2.6.33 kernels the
helper wasn't available so in these cases the zfs code must
provide it.  Luckily the bdi_setup_and_register() function
is trivial.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #367
This commit is contained in:
Brian Behlendorf
2011-11-07 16:39:03 -08:00
parent 591fb62f19
commit 5547c2f1bf
60 changed files with 231 additions and 41 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/Makefile.in
+1
View File
@@ -43,6 +43,7 @@ am__aclocal_m4_deps = \
$(top_srcdir)/config/always-no-unused-but-set-variable.m4 \
$(top_srcdir)/config/kernel-bdev-block-device-operations.m4 \
$(top_srcdir)/config/kernel-bdev-logical-size.m4 \
$(top_srcdir)/config/kernel-bdi-setup-and-register.m4 \
$(top_srcdir)/config/kernel-bdi.m4 \
$(top_srcdir)/config/kernel-bio-empty-barrier.m4 \
$(top_srcdir)/config/kernel-bio-end-io-t-args.m4 \
include/linux/Makefile.in
+1
View File
@@ -43,6 +43,7 @@ am__aclocal_m4_deps = \
$(top_srcdir)/config/always-no-unused-but-set-variable.m4 \
$(top_srcdir)/config/kernel-bdev-block-device-operations.m4 \
$(top_srcdir)/config/kernel-bdev-logical-size.m4 \
$(top_srcdir)/config/kernel-bdi-setup-and-register.m4 \
$(top_srcdir)/config/kernel-bdi.m4 \
$(top_srcdir)/config/kernel-bio-empty-barrier.m4 \
$(top_srcdir)/config/kernel-bio-end-io-t-args.m4 \
include/linux/vfs_compat.h
+29 -16
View File
@@ -62,23 +62,36 @@ truncate_setsize(struct inode *ip, loff_t new)
}
#endif /* HAVE_TRUNCATE_SETSIZE */
#if defined(HAVE_BDI) && !defined(HAVE_BDI_SETUP_AND_REGISTER)
/*
* 2.6.32 API change,
* Added backing_device_info (bdi) per super block interfaces. When
* available a bdi must be configured when using a non-device backed
* filesystem for proper writeback. It's safe to leave this code
* dormant for kernels which only support pdflush and not bdi.
* 2.6.34 API change,
* Add bdi_setup_and_register() function if not yet provided by kernel.
* It is used to quickly initialize and register a BDI for the filesystem.
*/
#ifdef HAVE_BDI
#define bdi_get_sb(sb) (sb->s_bdi)
#define bdi_put_sb(sb, bdi) (sb->s_bdi = bdi)
#else
#define bdi_init(bdi) (0)
#define bdi_destroy(bdi) (0)
#define bdi_register(bdi, parent, fmt, args) (0)
#define bdi_unregister(bdi) (0)
#define bdi_get_sb(sb) (0)
#define bdi_put_sb(sb, bdi) (0)
#endif /* HAVE_BDI */
extern atomic_long_t zfs_bdi_seq;
static inline int
bdi_setup_and_register(struct backing_dev_info *bdi,char *name,unsigned int cap)
{
char tmp[32];
int error;
bdi->name = name;
bdi->capabilities = cap;
error = bdi_init(bdi);
if (error)
return (error);
sprintf(tmp, "%.28s%s", name, "-%d");
error = bdi_register(bdi, NULL, tmp,
atomic_long_inc_return(&zfs_bdi_seq));
if (error) {
bdi_destroy(bdi);
return (error);
}
return (error);
}
#endif /* HAVE_BDI && !HAVE_BDI_SETUP_AND_REGISTER */
#endif /* _ZFS_VFS_H */
include/sys/Makefile.in
+1
View File
@@ -43,6 +43,7 @@ am__aclocal_m4_deps = \
$(top_srcdir)/config/always-no-unused-but-set-variable.m4 \
$(top_srcdir)/config/kernel-bdev-block-device-operations.m4 \
$(top_srcdir)/config/kernel-bdev-logical-size.m4 \
$(top_srcdir)/config/kernel-bdi-setup-and-register.m4 \
$(top_srcdir)/config/kernel-bdi.m4 \
$(top_srcdir)/config/kernel-bio-empty-barrier.m4 \
$(top_srcdir)/config/kernel-bio-end-io-t-args.m4 \
include/sys/fm/Makefile.in
+1
View File
@@ -43,6 +43,7 @@ am__aclocal_m4_deps = \
$(top_srcdir)/config/always-no-unused-but-set-variable.m4 \
$(top_srcdir)/config/kernel-bdev-block-device-operations.m4 \
$(top_srcdir)/config/kernel-bdev-logical-size.m4 \
$(top_srcdir)/config/kernel-bdi-setup-and-register.m4 \
$(top_srcdir)/config/kernel-bdi.m4 \
$(top_srcdir)/config/kernel-bio-empty-barrier.m4 \
$(top_srcdir)/config/kernel-bio-end-io-t-args.m4 \
include/sys/fm/fs/Makefile.in
+1
View File
@@ -43,6 +43,7 @@ am__aclocal_m4_deps = \
$(top_srcdir)/config/always-no-unused-but-set-variable.m4 \
$(top_srcdir)/config/kernel-bdev-block-device-operations.m4 \
$(top_srcdir)/config/kernel-bdev-logical-size.m4 \
$(top_srcdir)/config/kernel-bdi-setup-and-register.m4 \
$(top_srcdir)/config/kernel-bdi.m4 \
$(top_srcdir)/config/kernel-bio-empty-barrier.m4 \
$(top_srcdir)/config/kernel-bio-end-io-t-args.m4 \
include/sys/fs/Makefile.in
+1
View File
@@ -43,6 +43,7 @@ am__aclocal_m4_deps = \
$(top_srcdir)/config/always-no-unused-but-set-variable.m4 \
$(top_srcdir)/config/kernel-bdev-block-device-operations.m4 \
$(top_srcdir)/config/kernel-bdev-logical-size.m4 \
$(top_srcdir)/config/kernel-bdi-setup-and-register.m4 \
$(top_srcdir)/config/kernel-bdi.m4 \
$(top_srcdir)/config/kernel-bio-empty-barrier.m4 \
$(top_srcdir)/config/kernel-bio-end-io-t-args.m4 \