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sysfs: remove error messages for -EEXIST case

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It is possible that the entry in sysfs already exists, one case of this is
when a network device is renamed to bonding_masters. Anyway, in this case
the proper error path is for device_rename to return an error code, not to
generate bogus backtrace and errors.

Also, to avoid possible races, the create link should be done before the
remove link. This makes a device rename atomic operation like other renames.

Signed-off-by: Stephen Hemminger <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Stephen Hemminger 2008-05-14 22:34:16 -07:00 • committed by David S. Miller
commit 0599ad53fe
2 changed files with 4 additions and 10 deletions
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6
fs/sysfs/dir.c
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@ -419,12 +419,8 @@ void sysfs_addrm_start(struct sysfs_addrm_cxt *acxt,
*/
int sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd)
{
if (sysfs_find_dirent(acxt->parent_sd, sd->s_name)) {
printk(KERN_WARNING "sysfs: duplicate filename '%s' "
"can not be created\n", sd->s_name);
WARN_ON(1);
if (sysfs_find_dirent(acxt->parent_sd, sd->s_name))
return -EEXIST;
}
sd->s_parent = sysfs_get(acxt->parent_sd);