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authorAl Viro <viro@zeniv.linux.org.uk>2019-10-31 08:21:58 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2019-11-15 21:49:04 +0300
commit6c2d4798a8d16cf4f3a28c3cd4af4f1dcbbb4d04 (patch)
tree2b14c83985da30129911f7ad455e4cc587690e58 /fs/dcache.c
parentd41efb522e902364ab09c782d511c1bedc388ddd (diff)
downloadlinux-6c2d4798a8d16cf4f3a28c3cd4af4f1dcbbb4d04.tar.xz
new helper: lookup_positive_unlocked()
Most of the callers of lookup_one_len_unlocked() treat negatives are ERR_PTR(-ENOENT). Provide a helper that would do just that. Note that a pinned positive dentry remains positive - it's ->d_inode is stable, etc.; a pinned _negative_ dentry can become positive at any point as long as you are not holding its parent at least shared. So using lookup_one_len_unlocked() needs to be careful; lookup_positive_unlocked() is safer and that's what the callers end up open-coding anyway. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/dcache.c')
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