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gh-117394: Reduce syscalls for posixpath.ismount #117395

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gh-117394: Reduce syscalls for posixpath.ismount #117395

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d623b82
Reduce syscalls for `posixpath.ismount`
nineteendo Mar 30, 2024
07691c4
📜🤖 Added by blurb_it.
blurb-it[bot] Mar 30, 2024
cb532fc
Update Misc/NEWS.d/next/Core and Builtins/2024-03-30-19-34-51.gh-issu…
nineteendo Mar 30, 2024
d3a0a92
Fix `ismount('/mnt/storage/link/storage')`
nineteendo Apr 1, 2024
8fde308
monkey patch `os.stat`
nineteendo Apr 2, 2024
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Reduce syscalls for posixpath.ismount
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@nineteendo
nineteendo committed Mar 30, 2024
commit d623b82c459265f1ccb6cd9d0df079ab206feadc
7 changes: 1 addition & 6 deletions Lib/posixpath.py
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Original file line number Diff line number Diff line change
Expand Up @@ -202,12 +202,7 @@ def ismount(path):
if stat.S_ISLNK(s1.st_mode):
return False

path = os.fspath(path)
if isinstance(path, bytes):
parent = join(path, b'..')
else:
parent = join(path, '..')
parent = realpath(parent)
parent = dirname(abspath(path))
try:
s2 = os.lstat(parent)
except (OSError, ValueError):
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